SharpDev.Tools

Free tools for everyone.

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Text

23 tools

Word Counter

Count words, characters, sentences, paragraphs. Reading and speaking time estimates. Instant results.

Case Converter

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.

Lorem Ipsum Generator

Generate placeholder text for your designs. Paragraphs, sentences, or words. Copy as text or HTML.

Text Diff Checker

Compare two texts side by side and see exactly what changed. Word-level highlighting, inline or split view.

Line Sorter & Deduper

Clean up any list. Sort alphabetically, remove duplicates, reverse, trim whitespace, number lines.

Character Counter

Check if your post fits Twitter, Instagram, SMS, or SEO limits. Live count with platform presets.

Slug Generator

Turn any text into a clean URL slug. Handles accents, special characters, and stopwords.

Markdown Preview

Live Markdown preview with GitHub-flavored basics. Export to HTML or .md.

Whitespace & Invisible Char Cleaner

Strip zero-width chars, normalize spaces, fix line endings, remove suspicious Unicode.

Markdown ↔ HTML Converter

Convert Markdown to HTML or HTML back to Markdown. Live conversion both ways.

Reading Level Scorer

Flesch, Gunning Fog, SMOG, Coleman-Liau, ARI. See what grade level your text is written at.

String Utilities

Repeat, pad, reverse, split, join, find/replace, count. The little string operations all in one place.

Markdown Table Builder

Visual editor for GitHub-flavored Markdown tables. Paste from CSV, set alignment, sort columns.

Unicode Text Stylizer

Make 𝐛𝐨𝐥𝐝, 𝑖𝑡𝑎𝑙𝑖𝑐, 𝓈𝒸𝓇𝒾𝓅𝓉, ɐlǝlǝɹǝp text using Unicode. For social bios and posts.

Text Reverser

Reverse any text by character, word, or line. Handles multi-byte emoji properly. Copy with one click.

Find & Replace

Bulk find and replace across any text. Regex, case sensitivity, whole-word toggles. Match count as you type.

HTML to Plain Text

Strip all HTML tags, decode entities, keep paragraph breaks and bullets. DOMParser-based — handles real-world HTML.

Keyword Density Analyzer

1, 2, 3-word phrase frequency for SEO content audits. Stopword filtering, density % per phrase.

WPM Typing Test

Test your typing speed — words per minute, accuracy, mistakes. 15s / 30s / 60s / 2min sessions.

Upside Down Text

Flip text upside down and backwards (ɐǝ) for bios and posts. Copy anywhere.

Text Repeater

Repeat text or a word N times, with optional separator, new line or numbering.

Markdown Stripper

Remove Markdown formatting for clean plain text. Strips headings, bold, links, code, lists.

Bacon / Themed Ipsum

Generate bacon, pirate, hipster or corporate placeholder text. Fun Lorem Ipsum alternative.

YouTube

9 tools

Twitter

7 tools

LinkedIn

9 tools

Instagram

9 tools

Social Media

9 tools

Images & Media

15 tools

Image Compressor & Resizer

Compress and resize JPG, PNG, WebP in your browser. Batch processing. Target file size or quality.

Image Downloader

Download any image from the web. Paste a direct URL or a webpage link to find and save all its images.

Image to Base64

Convert any image to a data URL for embedding in CSS, HTML, or JSON. Drop or paste.

Image Format Converter

Convert PNG ↔ JPG ↔ WebP in your browser. Set quality, batch convert, download as ZIP.

Image Color Picker

Click any pixel in an uploaded image to get HEX, RGB, HSL. Build a palette of multiple picks.

Image Rotate & Flip

Rotate any image 90°, 180°, 270° or flip horizontally / vertically. Lossless at right angles. Custom-angle slider for arbitrary rotation.

Image Crop

Free crop or aspect-lock to 1:1, 4:5, 9:16, 16:9 and more. Drag handles to size + position. PNG/JPG export.

HEIC to JPG / PNG

Convert iPhone HEIC / HEIF photos to standard JPG or PNG. Batch convert, download as ZIP. Browser-only.

Image to Text (OCR)

Extract text from any image via Tesseract.js. 100+ languages, browser-only — your image never uploaded.

Pixelate / Blur Image

Draw redaction boxes on an image — pixelate, blur, or solid black bar. For faces, license plates, sensitive info.

Photo Collage Maker

Combine 2-9 photos into one image. Grid layout, configurable gap + background, IG / Story output sizes.

Color Palette from Image

Auto-extract dominant 3-12 colors from any image. Median-cut quantization, HEX / RGB / HSL output.

GIF Maker

Combine 2-30 images into an animated GIF. Drag to reorder, set frame delay + size. Browser-only via gif.js.

EXIF / Image Metadata Viewer

See camera, lens, exposure, and GPS data in your photos. Strip metadata before sharing for privacy.

Favicon Generator

Make favicons from an emoji, text, or image. Download PNGs at every size. Copy HTML snippet.

PDF

26 tools

PDF to Text

Extract text from any PDF file. Copy or download as .txt. Your file never leaves your device.

PDF to JPG / PNG

Convert every page of a PDF into a JPG or PNG image. Pick 72/144/300 DPI. Download single pages or all as ZIP.

Image to PDF

Combine multiple JPG, PNG, WebP or GIF images into a single PDF. Drag to reorder, pick page size and margin.

Merge PDF

Combine multiple PDFs into one file. Drag to reorder. Runs entirely in your browser — your PDFs stay local.

Split PDF

Extract a page range or split every page into its own file. Download as ZIP. Range syntax: 1-5, 8, 10-12.

Rotate PDF

Rotate every page or click thumbnails to rotate individual pages 90, 180 or 270 degrees. Save as new PDF.

Delete Pages from PDF

Click page thumbnails to mark them for removal, then save a clean PDF without those pages.

PDF Page Numbering

Add page numbers to any PDF. Pick position (header / footer × left / center / right), format, start number.

PDF Watermark

Add a diagonal text watermark — DRAFT, CONFIDENTIAL, copyright. Color, opacity, rotation, font size.

Markdown to PDF

Paste Markdown, see a live preview, download a clean PDF. Tables, code blocks, lists, all supported.

HTML to PDF

Paste raw HTML, see a live preview, download a paginated PDF. Inline CSS and data-URL images supported.

Word to PDF

Convert .docx files to PDF directly in your browser via mammoth.js — your document never leaves your device. Headings, tables, lists, images preserved.

PDF Metadata Editor

View + edit Title, Author, Subject, Keywords, Creator. Strip personal info before sharing. SEO-friendly.

Crop PDF

Trim margins from every page. Set top / bottom / left / right in mm or percentage. Useful for scanner output.

Reorder PDF Pages

Drag thumbnails to rearrange pages. Reverse all, remove pages, reset to original order. Save the new PDF.

Insert PDF into Another

Insert pages from PDF B into PDF A at any position. Optional page-range filter. Different from Merge.

Sign a PDF

Place a signature image on any page, drag to position, scale. PNG with transparency works best.

Compress PDF

Reduce file size by rasterizing + JPEG-recompressing. Best for scans + slide decks. Before / after size shown.

PDF Form Flatten

Lock filled form values into static text — recipient can no longer edit. For signed contracts, tax forms, invoices.

PDF Form Fill

Open any AcroForm PDF, fill every field directly in the browser, save the completed file.

PDF OCR — Make Scans Searchable

Run OCR on a scanned PDF via Tesseract.js. Output looks identical but has an invisible searchable text layer.

PDF Redact

Permanent black-bar redaction — text underneath is destroyed via rasterization, not just hidden.

PDF Page Size Resize

Convert pages between A4, Letter, Legal, A3, A5 or custom. Fit-with-margins or stretch-to-fill.

PDF to Markdown

Extract text with detected H1/H2/H3 headings via font-size clustering. Best for text-heavy documents.

PDF to HTML

Semantic h1/p tags or absolute-positioned divs. Two modes. Wrap in full HTML5 document.

PDF to Word (.docx)

Honest text-only conversion to editable .docx. Headings preserved. Best for articles, reports, books.

Design & CSS

21 tools

Color Palette Extractor

Upload an image and extract its dominant colors. HEX, RGB, HSL values. Click to copy.

Color Converter

Convert between HEX, RGB, HSL, HSV, CMYK. Eyedrop or type any format. Includes complementary palettes.

WCAG Contrast Checker

Check foreground/background pair against WCAG AA and AAA for normal and large text. Real-time score.

Gradient Generator

Visual builder for linear and radial CSS gradients. Multiple color stops, live preview, copy code.

Box Shadow Generator

Visual builder with multiple stacked shadows, inset toggle, and full control over offset, blur, spread, colour.

Text Shadow Generator

Build polished text shadow effects with live preview and presets — glow, emboss, hard drop, neon and more.

CSS Filter Playground

Stack CSS filters on any image in real time — blur, brightness, contrast, hue-rotate, saturate, invert, sepia.

Glassmorphism Generator

Trendy frosted-glass effect builder. Backdrop-filter blur, tint, border, shadow and corner radius tuned live.

Border Radius Generator

Control all 8 corner handles individually. Elliptical radii, live preview, copy the full CSS rule.

Clip-path Generator

Visual builder for CSS clip-path polygons, circles and ellipses. Drag vertices directly in the preview.

CSS Generator

Visual builders for CSS gradients, box shadows, and border radius. Live preview, copy code.

CSS Animation Generator

Build keyframe animations visually. Drag timeline, edit per-frame properties, copy CSS.

CSS Flexbox Generator

Visual Flexbox builder with live preview. Direction, justify, align, wrap, gap — copy the CSS.

CSS Grid Generator

Visual CSS Grid builder. Presets for sidebar, cards, dashboard, Holy Grail. Custom templates supported.

Color Mixer

Blend two colors and get the result plus every step in between. Adjustable ratio.

CSS Triangle Generator

Pure CSS triangles in any direction, size and color via the border trick. Live preview.

Cubic Bezier Editor

Drag handles to design a CSS cubic-bezier easing curve. Live animation preview.

Neumorphism Generator

Soft-UI (neumorphic) shadow CSS with dual shadows and a live preview. Copy-paste ready.

PX to REM Converter

Convert px, rem, em, pt and percent for CSS based on your root font size.

Color Blindness Simulator

Preview colors under protanopia, deuteranopia, tritanopia and achromatopsia for accessibility.

Color Name Finder

Find the nearest CSS named color for any hex value, with exact-match detection.

Calculators

23 tools

Meeting Cost Calculator

Find out how much your meetings actually cost. Enter attendees, salaries, and duration.

Aspect Ratio Calculator

Resize images and videos keeping proportions. Presets for YouTube, Reels, Instagram, DSLR.

Unit Converter

Convert between units instantly. Length, weight, temperature, area, volume, speed, data size, time, CSS.

Number Base Converter

Convert between binary, octal, decimal, and hex. Live-linked fields. Bitwise inspector.

BMI & Body Calculator

BMI, BMR, ideal weight, TDEE, and macros. Metric or imperial. US Navy body-fat method.

Roman Numerals Converter

Convert between Roman numerals and regular numbers. Supports extended notation up to 3,999,999.

Percentage Calculator

Three calculators in one: X % of Y, what % is X of Y, and percentage increase/decrease between two numbers.

Random Number Generator

Generate random integers in any range, one-off or in batch. Cryptographically random, unique option.

Temperature Converter

Convert between Celsius, Fahrenheit, Kelvin and Rankine. Live three-way conversion as you type.

Number to Words

Spell out any integer in English, from zero to quadrillions. Useful for cheques, legal text, and invoices.

TDEE & BMR Calculator

Daily calorie needs using Mifflin-St Jeor. Activity multipliers + targets for cutting, maintaining and bulking.

Due Date Calculator

Calculate due date and current pregnancy week from LMP or conception. Trimester breakdown + milestones.

Running Pace Calculator

Pace ↔ time ↔ distance. Split tables for 5K, 10K, half-marathon, marathon at any pace you set.

Cooking Measurement Converter

Cups ↔ grams ↔ ml ↔ oz with per-ingredient density. Plus °C / °F / gas-mark for oven temps.

Sleep Cycle Calculator

Wake at the end of a 90-minute cycle (not mid-cycle). Bedtime suggestions or wake-time options.

GPA Calculator

Unweighted (4.0) + weighted (5.0) GPA from courses, grades, credits, and AP / honors / college flags.

Gas Mileage Calculator

MPG (US + UK), L/100km, km/L, cost-per-mile, full trip cost. Multi-currency.

Recipe Scaler

Paste any recipe, change servings — every ingredient quantity scales. Fraction-aware, decimals or pretty fractions.

Average Calculator

Mean, median, mode, range, sum and count from any list of numbers.

Hours Calculator

Add up work time from start/end rows, subtract breaks. Total in h:mm and decimal hours.

Fraction Calculator

Simplify fractions, fraction to decimal and decimal to fraction, mixed numbers.

Ratio Calculator

Simplify ratios to lowest terms and solve proportions A:B = C:?. Scale mixes and recipes.

Scientific Notation

Convert numbers to/from scientific, E-notation and engineering notation.

Time & Date

13 tools

Age & Date Difference

Calculate exact age or difference between two dates. Years, months, days, weeks, hours, minutes.

Timer, Stopwatch & Pomodoro

Three timers in one. Work sessions, accurate stopwatch, countdown. Notifications for background tabs.

Timestamp Converter

Unix timestamp to human date and back. Live clock, relative time, seconds or milliseconds.

Cron Expression Explainer

Paste any cron expression and see it in plain English plus the next 5 run times.

Time Zone Converter

Convert times between any zones. Live world clock for your favorite cities.

Working Days Calculator

Count business days between two dates. Skips weekends, with optional public-holiday exclusions.

Day of Year + Week Number

Date ↔ ordinal day (1-366), ISO 8601 week number, quarter, days remaining in year, year progress %.

Countdown Timer

Live days / hours / minutes / seconds to any future date. Presets for New Year, Christmas, custom moment.

Date Format Converter

Convert between ISO 8601, US, EU, RFC 2822, Unix timestamps. Edit any field — all others update live.

Add or Subtract Days

Project-deadline math — add/subtract days, weeks, months, years. Business-day mode skips weekends.

Sunrise / Sunset Calculator

Sunrise + sunset + day length + twilight phases for any lat / lng / date. NOAA algorithm.

Moon Phase Calculator

Current moon phase + illumination + next full / new moon dates. Pick any date.

Time Duration Calculator

Exact duration between two dates and times, broken into days/hours/minutes and totals.

Money & Finance

14 tools

Tip Calculator

Calculate tips and split the bill between any number of people. Multi-currency, instant results.

Mortgage & Loan Calculator

Monthly payment, total interest, and full amortization schedule. Multi-currency, with extra payment scenarios.

Salary Converter

Convert between hourly, daily, weekly, monthly and yearly pay. Configurable hours per week and weeks off.

Compound Interest

Calculate compound growth of an investment over time with optional monthly contributions and annual growth rate.

Discount Calculator

Work out the final price after a discount, the original price from a sale price, or the discount percentage saved.

VAT / Sales Tax Calculator

Net ↔ gross with country presets. Germany 19%, UK 20%, Austria 20%, and more. Bidirectional input.

Profit Margin Calculator

Cost + price → margin & markup, or cost + target margin → selling price. For Etsy, Amazon, Shopify sellers.

Freelance Hourly Rate

Calculate your minimum freelance rate from take-home goal, tax, overhead, working days and billable ratio.

Savings Goal Calculator

How much to save monthly to reach a goal, or how long it takes at your current rate. Compound interest baked in.

Inflation Calculator

Future or past purchasing power. What $100 in 1990 is worth now, or what $5k today buys in 20 years.

ROI Calculator

Return on investment — ROI %, net profit, annualised %. Compare projects of different durations fairly.

Net Worth Calculator

Assets minus liabilities, line-by-line. Multi-currency. Your numbers never leave the browser.

Payment Fee Calculator

PayPal / Stripe / Wise fees and net payout, plus reverse 'charge to receive X'.

Break-Even Calculator

Break-even units and revenue from fixed costs, price and variable cost per unit.

Password Generator

Generate strong, random passwords. Configurable length, symbols, look-alike exclusion. Cryptographically secure.

Password Strength Checker

Entropy in bits, estimated online + offline crack time, common-pattern detection. Password never leaves the browser.

Diceware Passphrase

Memorable + cryptographically strong passphrases from the EFF wordlist. Entropy bits shown — runs in your browser.

Hash Generator

MD5, SHA-1, SHA-256, SHA-512. Works on text or any file. Computed locally in your browser.

HMAC Generator

HMAC-SHA1/SHA-256/SHA-384/SHA-512 for API signing, JWT, webhook verification. Hex or Base64 output.

JWT Decoder

Decode JSON Web Tokens. See header, payload, and signature. Human-readable exp/iat timestamps.

JWT Signer

Build and sign JSON Web Tokens with HS256/HS384/HS512 in your browser. Pairs with the existing JWT decoder.

Bcrypt Generator & Verifier

Hash passwords with bcrypt at adjustable cost, or verify a password against an existing hash. Runs locally.

.htpasswd Generator

Create Apache and Nginx .htpasswd entries. Choose bcrypt or APR1 MD5. Copy the full one-line entry.

ROT13 / Caesar Cipher

Classic letter-shift cipher with live preview. Any shift from 1 to 25, plus the ROT13 default. Both directions.

AES Encrypt / Decrypt

AES-GCM-256 with PBKDF2 key derivation. Browser-native via SubtleCrypto — password + plaintext stay local.

TOTP / 2FA Code Generator

Generate Google-Authenticator-compatible 2FA codes from a base32 secret. RFC 6238. Live countdown.

Vigenere Cipher

Encode/decode text with the Vigenere keyword cipher. Two-way, live, browser-only.

Random Key Generator

Secure random API keys and tokens: hex, Base64, Base64URL or alphanumeric, bulk.

Generators

22 tools

QR Code Generator

Generate permanent QR codes for free. No redirects, no expiration, no tracking. Works forever.

Random Picker

Pick random names from a list, generate numbers, flip coins, roll dice. Truly random, not pseudo-random.

Mock Data Generator

Generate fake users, addresses, dates for prototyping. Export as JSON, CSV, NDJSON, SQL, or TypeScript.

Dice Roller

Roll any combo of D4, D6, D8, D10, D12, D20, D100. D&D-style dice notation supported (e.g. 3d6+2).

Coin Flip

Flip a virtual coin. Run single flips or batches of 100 and see the streak and heads/tails ratio.

Morse Code Translator

Convert between text and Morse code instantly. International Morse alphabet, optional audio playback.

Username Generator

Themed random handles — gamer, professional, cute, dev, dark. Style (snake/camel/pascal) and number suffix.

Identicon Avatar Generator

GitHub-style abstract avatars from any text. Hash-derived, deterministic. Download PNG or SVG.

Placeholder Image Generator

Solid-color PNG/JPG with dimension labels. Custom colors, preset sizes for HD, IG square, Story, OG image.

Initials Avatar Generator

Letter on a colored circle / square — Gmail / Slack style. Custom colors, shapes, sizes. PNG + SVG export.

Color Tints & Shades

Tailwind-style 50-900 palette from any base color. HEX / RGB / HSL, copy CSS variables or Tailwind config.

Online Notepad

Free browser notepad with autosave to localStorage. No account, no upload — your notes stay private.

Spin the Wheel

Random name picker with animation. Class raffles, giveaways, team decisions. Crypto-secure randomness.

Yes / No Decision Maker

Random Yes / No / Maybe with one click. Plus custom options mode. The trick is noticing your reaction.

Tone Generator

Sine / square / triangle / sawtooth tones at any Hz. Speaker test, hearing test, tuning reference.

Text-to-Speech

Hear typed text spoken aloud via Web Speech API. Pick voice + rate + pitch + volume. Local OS voices.

Speech-to-Text

Speak into your mic, watch text appear. 60+ languages. Chrome / Edge / Brave / Chromium browsers.

Audio Recorder

Record from your mic, download as WebM or MP4. Pause / resume. Browser-only — no upload.

ASCII Art Generator

Type a word, get giant block-letter ASCII art. Multiple styles. Copy-paste into terminals, READMEs, banners.

NATO Phonetic Alphabet

Spell text in Alpha-Bravo-Charlie. For reading codes and names clearly over the phone.

Barcode Generator

Generate Code128, EAN, UPC, Code39 barcodes. Download as PNG or SVG, browser-only.

List Randomizer

Shuffle a list into random order, dedupe, or pick a random subset. Crypto-random.

Developers

40 tools

JSON Formatter

Format, validate, minify, and sort JSON. Error messages with line numbers. Escape and unescape strings.

Base64 Encoder/Decoder

Encode and decode Base64. Works with text and files. URL-safe variant supported.

CSV ↔ JSON

Convert between CSV and JSON. Handles quoted fields, custom delimiters, auto-detects direction.

SQL Formatter

Format messy SQL queries. Indented clauses, keyword case, comma style. Handles comments and strings correctly.

JSON Diff

Compare two JSON documents structurally. See added, removed, and changed values per path.

JSON Schema Generator

Paste a JSON sample, get a JSON Schema. Auto-detects types, formats, enums, required fields.

YAML ↔ JSON Converter

Convert YAML to JSON or JSON to YAML. Format and validate. Handles anchors, aliases, multi-line strings.

XML Formatter & XML ↔ JSON

Format, minify, and convert XML. Handles attributes, namespaces, CDATA, processing instructions.

HTTP Status Code Reference

Every HTTP status code with common causes and what to do. Searchable, filterable, jump-by-code.

HTML Minifier & Beautifier

Collapse whitespace, strip comments and inline CSS/JS — or beautify back with consistent indentation.

CSS Minifier & Beautifier

Strip comments and whitespace for production, or re-expand minified CSS into readable indented form.

JS Minifier & Beautifier

Compact JavaScript by removing comments and whitespace, or format minified JS with consistent indentation.

URL Parser

Break any URL into protocol, host, port, path, query, fragment. See each query param on its own line. Decode on.

User-Agent Parser

Paste any User-Agent string to see the browser, engine, OS and device it identifies as. Detects major edge cases.

URL Encoder/Decoder

Encode and decode URL components. Parse query strings into a readable table.

Regex Tester

Test JavaScript regex with live match highlighting, capture groups, and replace.

HTML Entity Encoder/Decoder

Encode special characters to HTML entities and back. Named or numeric, safe or full.

Binary ↔ Text Converter

Convert text to 8-bit binary and back. UTF-8 aware so emojis and accents round-trip correctly.

UUID Generator

Generate cryptographically random v4 UUIDs. Batch up to 1000 at a time. Multiple formats.

.gitignore Generator

Combine curated templates for languages, frameworks, IDEs, and operating systems. Inlined, no external fetches.

CIDR / Subnet Calculator

Calculate IPv4 subnet ranges, masks, host counts, and binary representations from any CIDR notation.

chmod / Permission Calculator

Convert between octal, symbolic, and chmod commands. Visual checkboxes for user/group/other.

Google SERP Preview

See how your page appears in Google — desktop + mobile snippets with title (60 char) and description (155 char) truncation.

Robots.txt Generator

Visual builder for robots.txt — user-agent rules, allow / disallow paths, sitemap link, crawl-delay. Block AI crawlers preset.

Sitemap.xml Generator

Paste URLs — get a valid sitemap.xml with lastmod, changefreq, priority. Download as file.

Schema Markup Generator

JSON-LD for Article, FAQ, Product, LocalBusiness, Recipe, HowTo, Event, Organization, BreadcrumbList.

Markdown TOC Generator

Paste Markdown — get a table of contents with GitHub-style anchor links. Configurable depth.

JSONPath Tester

Write JSONPath queries ($.foo[*].bar), see matches live. Filter expressions + slices supported.

JSON to TypeScript

Generate TypeScript interfaces from JSON with inferred types and nested interfaces.

HTML to JSX

Convert HTML to React JSX — className, style objects, self-closing tags, camelCased attributes.

cURL Builder

Build a copy-paste curl command from a form: method, URL, headers, JSON body, auth.

String Escape / Unescape

Escape or unescape strings for JSON, JS, HTML, URL and backslash sequences. Two-way.

Nano ID & ULID Generator

Generate Nano IDs and sortable ULIDs in bulk. Cryptographically random, URL-safe.

SVG Optimizer

Minify SVG, strip editor cruft + metadata, export as optimized SVG, CSS data-URI or img tag.

Test Credit Card Numbers

Luhn-valid fake card numbers for testing payment forms. Visa/MC/Amex/Discover. Validator too.

Base58 Encode / Decode

Bitcoin-style Base58 (no confusing 0 O I l). Encode text or decode back. Two-way.

Discord Timestamp

Generate dynamic Discord timestamp codes for every style. Renders in local time.

HTML Table Generator

Build HTML table markup: rows, columns, header row, borders, striping. Live preview.

URL Status Checker

HTTP status code + full redirect chain (301 → 200) for any URL. Find broken links.

HTTP Header Checker

Inspect any URL's response headers + security-header checklist (HSTS, CSP, XFO).

What is SharpDev.Tools?

SharpDev.Tools is a curated collection of 254 free online tools for developers, writers, designers and content creators — organized into 15 categories covering text, code, design, PDFs, images, calculators, generators, social-media counters and developer utilities. Every tool runs in your browser; no upload, no sign-up, no ads, no cookies.

Browse by category

Why SharpDev.Tools?

Frequently asked questions

Are all SharpDev.Tools really free?

Yes — every tool is free, with no sign-up, no ads, no usage limits, no premium tier. SharpDev.Tools is funded entirely by side-project budget; there are no paywalls or upsells.

Do I need to create an account?

No. There is no account system on SharpDev.Tools. Open any tool URL and use it immediately.

Are my files and data uploaded?

No. Every tool runs entirely in your browser via JavaScript / WebAssembly. Even PDF tools, image processing, OCR and cryptography happen locally. The only exceptions are tools that explicitly fetch from a public API (e.g. YouTube thumbnail downloader) — those make the API call from your browser, not a server.

Does SharpDev.Tools use cookies or tracking?

No cookies. Zero cookies, no consent banner needed. The site uses privacy-friendly aggregate analytics (Plausible) to measure pageviews — no personal data, no cross-site tracking, GDPR-compliant by design.

How can I request a new tool or report a bug?

Every tool page has a 'Found a bug?' section that opens a quick form. For new-tool requests, the Request page lets you describe what you'd like to see built.