Free utility tools that run in your browser.

Shrink PDF file size without uploading to a server.

Combine multiple PDFs into one in your browser.

Split a PDF by pages or page ranges, download as zip.

Convert JPG, PNG and WebP into a single PDF, locally.

Extract every page of a PDF as a JPG, PNG or WebP image.

Rotate selected or all pages of a PDF without re-encoding.

Reorder, delete and rotate PDF pages with thumbnails — fully local.

Add a text or image watermark to PDF pages, locally.

Extract text from a scanned PDF with tesseract.js — fully local.

OCR a scanned PDF and embed an invisible text layer back in.

Convert a PDF with a text layer to an editable .docx, locally.

Add a password and permission restrictions to a PDF in your browser.

Add page numbers to a PDF — pick position, format, starting number, fonts and colour.

Trim margins or fit a paper size (Letter, A4, 6×9) on PDF pages, locally.

Remove the password and permission restrictions from a PDF you can already decrypt — locally.

Cover PDF regions with opaque rectangles to hide content visually — useful as a visual mask before flattening.

Extract tables from a PDF into a multi-sheet .xlsx workbook — locally.

View and edit PDF document metadata fields locally in your browser.

Extract plain text content from PDF pages without uploading files.

Prepare printable HTML and export it as PDF using browser print.

Create QR codes for URLs, text, vCards, email, and Wi-Fi credentials with live preview, error-correction settings, and instant PNG/SVG download.

Strong random passwords with length and charset controls.

Generate random integers, floats or sequences in a range.

MD5, SHA-1, SHA-256, SHA-512 — entirely client-side.

Generate v4 / v7 UUIDs in bulk with copy-to-clipboard.

Build clean, semantic HTML table markup from an editable grid with header, caption, border, and stripe options — every cell escaped and a live preview.

Compress JPEG, PNG and WebP without uploading anywhere.

Resize images by pixels or percentage, preserve aspect.

Convert between PNG, JPEG, WebP and AVIF.

View and strip EXIF metadata from photos locally.

Extract text from any image with tesseract.js — 14 languages, fully local.

Crop images to an exact rectangle or aspect ratio (1:1, 4:3, 16:9) — drag-resize, no upload.

Convert iPhone HEIC photos to JPG or PNG — batched, fully on-device.

Remove image backgrounds in your browser with an on-device AI model — your photo never uploads.

Minify SVG markup by stripping comments and redundant whitespace.

Convert SVG markup into PNG-ready output locally.

Add watermark text settings to image-processing payloads instantly.

Calculate image flip/rotate transformation settings quickly.

Count chars, words, lines, paragraphs and reading time.

Generate placeholder text by paragraphs, sentences or words.

camelCase, snake_case, kebab-case, Title Case and more.

Compare two texts and highlight added or removed lines.

Reverse a string by character, word or line.

Sort lines alphabetically, naturally or numerically; dedupe, trim and reverse in one click.

Turn any text into a URL-safe slug with ASCII transliteration and configurable separators.

Strip BOMs, zero-width chars and trailing whitespace; normalise EOLs, indentation and final newlines.

Live GitHub-Flavored Markdown to safe HTML preview with copy-as-HTML and zero data uploads.

Estimate readability from sentence length and syllable complexity.

Analyze top repeated terms and their percentage share in text content.

Convert letters and digits into NATO phonetic alphabet words.

Decode NATO phonetic words back into plain text characters.

Check whether text or numbers read the same forward and backward.

Compare two strings and detect anagrams after normalization.

Find and replace text patterns quickly with optional regex mode.

Generate banner-style ASCII text output from plain input.

Pick colors with HEX, RGB, HSL, OKLCH outputs.

Convert between HEX, RGB, HSL and OKLCH formats.

Extract a dominant color palette from any image.

Check foreground/background contrast against WCAG AA/AAA.

Build linear, radial or conic CSS gradients with live preview and one-click export.

Generate harmony palettes and Tailwind-style 50–900 scales from a single base colour.

Simulate how a design or chart looks to people with protanopia, deuteranopia, tritanopia or achromatopsia.

Blend two HEX colors by ratio and generate intermediate shades.

Map HEX colors to nearest common web color names.

Generate layered-looking box shadows with visual controls for offset, blur, spread and opacity.

Create custom rounded corners visually and copy exact border-radius CSS shorthand.

Build responsive CSS grid layouts with live rows, columns and gap controls.

Experiment with flex direction, alignment, wrap and gap, then copy valid CSS output.

Generate keyframes and animation shorthand with live motion preview and timing controls.

Create responsive SVG wave backgrounds with adjustable amplitude, wavelength and color.

Generate common favicon and PWA icon sizes plus manifest and HTML link tags from one image.

Generate CSS filter approximation settings for target HEX colors.

Generate clip-path polygon CSS strings from point lists.

Generate CSS border triangle snippets for direction and size.

Create CSS filter stacks with brightness, contrast and blur controls.

Generate glassmorphism CSS blocks with blur, border and shadow settings.

Generate configurable CSS text-shadow declarations instantly.

Create cubic-bezier timing functions and preview curve values.

Convert between px, rem, em, pt, vw and vh with a configurable root font size and viewport — see every equivalent at once.

Generate a deduplicated .gitignore by combining language, framework, OS and editor templates.

Convert URL lists into valid sitemap.xml output with optional lastmod, changefreq and priority fields.

Generate SEO, Open Graph and Twitter tags from page metadata fields.

Search common Tailwind utility classes and view concise CSS behavior mappings.

Build 5-field cron expressions visually and preview upcoming local run times.

Generate robots.txt crawler directives with allow/disallow rules and sitemap entries.

Generate alternate language hreflang tags for international SEO targeting.

Generate starter JSON-LD structured data blocks for pages and entities.

Generate canonical link tags to consolidate duplicate URL indexing signals.

Create 301/302 redirect rule lines for static hosts and migration mapping.

Parse raw HTTP headers into structured key-value entries for debugging.

Preview Open Graph title, description and image tags before publishing.

Preview Google-like title and meta description snippets for pages.

Preview Twitter/X card metadata fields and generated tags.

Build Google Analytics campaign URLs with utm_source, utm_medium, and utm_campaign tags — correctly encoded and existing query strings preserved.

Validate IFSC structure (4 letters + 0 + 6 chars) and decode bank/branch components.

Validate PAN card format and show entity-type hint from PAN structure.

Validate UPI ID syntax (identifier@handle) with quick provider-handle recognition.

Validate Aadhaar checksum format and produce masked output for safer document sharing.

Validate GSTIN checksum and decode PAN/state components instantly.

Convert image files to Base64 data URLs directly in your browser.

Convert common HTML content into clean Markdown text.

Convert values between binary, octal, decimal, hexadecimal and base36.

Convert decimal values to canonical Roman numerals and validate Roman inputs with strict subtractive rules.

Search common HTTP response codes with class and meaning.

Map file extensions to MIME types for accurate Content-Type headers.

Lookup characters, symbols and emoji by codepoint, name or category.

Search common Mac and Windows productivity keyboard shortcuts quickly.

Lookup common HTML named colors with HEX and RGB values.

Quick Markdown syntax reference for headings, lists, tables and links.

Encrypt and decrypt text locally with AES-256-GCM and passphrase-derived keys.

Generate signed HS256 JWTs from custom header and payload JSON locally.

Generate 6-digit rolling TOTP codes and otpauth URIs from Base32 secrets.

Check password breach exposure using Have I Been Pwned k-anonymity range API.

Generate bcrypt-style password hashes with configurable rounds for testing workflows.

Generate HMAC signatures (SHA-1, SHA-256, SHA-512) for API and webhook testing.

Generate compact URL-safe random IDs with configurable length and count.

Generate high-entropy API keys with custom prefixes, configurable length, and batch output for test and live environments.

Create htpasswd-compatible credential lines for basic-auth protected routes.

Generate Authorization: Basic header values from username and password pairs.

Build a Content-Security-Policy header from domain allowlists.

Decode PEM certificate payload into readable base64/DER metadata basics.

Format, validate, and minify JSON with exact line/column parse errors, optional common-fix mode, and one-click copy for API payloads.

Flatten JSON arrays into CSV with custom delimiters.

Validate JSON against a JSON Schema, see errors inline.

Open and inspect CSV files with sorting and filtering.

Convert JSON to YAML and back without losing types.

Generate TypeScript interfaces from any JSON payload — paste, copy, ship.

Generate a Zod runtime schema from any JSON sample, with z.infer type included.

Test JSONPath expressions against any JSON document — filters, regex, recursive descent.

Convert XML to JSON and back — attributes preserved, no XXE, all client-side.

Compare two JSON documents and highlight structural differences.

Normalize YAML indentation and run basic syntax validation checks.

Infer a JSON Schema (draft 2020-12) from a sample JSON document — types, required keys, and nested structure, all client-side.

Explore large JSON as a collapsible tree with key paths and type badges — parse, inspect, and navigate deep structures without uploading anything.

Convert m, ft, in, mi, km and more with precision.

Convert kg, lb, oz, g, ton and more.

Convert Celsius, Fahrenheit and Kelvin.

Convert m², ft², ac, ha, km² and more — metric, imperial and land units.

Convert L, mL, gal, cup, fl oz, m³ — metric and US customary in one table.

Convert nanoseconds, milliseconds, days, weeks, years — durations in every unit.

Convert m/s, km/h, mph, knots, Mach, ft/s — road, sea, air and engineering.

Convert KB, MB, GB, KiB, MiB, GiB, Mbit — SI vs IEC made obvious.

Convert pressure values across Pa, kPa, bar, psi and atm units.

Convert fuel economy across km/L, L/100km and MPG units.

Convert tsp, tbsp, cups, ml and liters for cooking recipes.

Convert approximate shoe sizes between US, UK and EU scales.

Encode or decode Base64 and Base64URL text with UTF-8 support, fast copy actions, and local-safe processing for JWT and API testing.

Percent-encode and decode URL strings safely.

Decode JWT header/payload segments, inspect exp/nbf/iat claims as readable times, and review signature data locally before verification.

Encode and decode HTML entities like & and '.

Encode text to hexadecimal bytes and decode HEX back to text.

Convert text to binary and binary bytes back to readable text.

Encode plain text to Morse code and decode Morse back to text.

Encode and decode Base32 (RFC 4648) text with UTF-8 support and optional padding — the encoding behind TOTP secrets and DNS-safe identifiers.

Encode and decode Base58 using the Bitcoin and IPFS alphabet — compact, copy-paste-safe text with no look-alike characters.

Scramble and unscramble text with the self-inverse ROT13 and ROT47 rotation ciphers — perfect for hiding spoilers and puzzle answers, all in your browser.

Compute the IEEE CRC32 checksum of text as hex and decimal — the fast error-detection code used by zip, gzip, and PNG files, all in your browser.

Common percentage, increase, decrease and tip math.

Calculate days, months and years between two dates.

Split bills with custom tip percentages between people.

Exact age in years, months and days plus next-birthday countdown.

Generate Fibonacci sequence values instantly for algorithm practice and quick checks.

Check if an integer is prime and inspect a factor for composite numbers.

Compute greatest common divisor and least common multiple for two integers.

Add, subtract, multiply and divide fractions with simplified output.

Compute mean, median and mode for comma-separated numeric lists.

Calculate duration between two HH:MM timestamps quickly.

Calculate width/height values while preserving a target aspect ratio.

Evaluate AND, OR, XOR, NOT, and shift operations at 8/16/32/64-bit width, with results in decimal, hex, binary, and octal.

Body Mass Index with metric / imperial inputs and WHO category bands.

Daily calorie needs from BMR and activity level, with weight-goal targets.

US Navy circumference method — body fat % from neck, waist and hip.

Basal metabolic rate via Mifflin-St Jeor, Harris-Benedict and Katch-McArdle.

Estimate lean body mass with Boer, James and Hume formulas.

Healthy weight range from height via Robinson, Miller, Devine and Hamwi formulas.

Healthy weight range for your height using BMI 18.5–24.9 and clinical references.

AR 600-9 body fat % and pass/fail check from neck, waist and hip measurements.

Karvonen and percentage-of-max heart rate zones for cardio training.

1RM via Epley, Brzycki, Lander, Lombardi, Mayhew, O'Conner and Wathan formulas.

Running pace per km / mile and finish-time predictor for common race distances.

Energy expenditure for 30+ activities via the MET method (kcal = MET × kg × hours).

Estimate daily water intake from body weight and activity level.

Estimate daily protein, carbs and fat targets from calories.

Monthly loan EMI, total interest and amortization schedule for home, car and personal loans.

Maturity value, total invested and returns for a monthly SIP at an expected annual rate.

Indian GST (5/12/18/28%) — add or remove tax with CGST + SGST or IGST breakdown.

Future value with annual, half-yearly, quarterly, monthly or daily compounding.

Compound Annual Growth Rate — back-solve the annualised return or project a future value at a known rate.

Fixed deposit maturity with quarterly compounding (Indian-bank standard) and the effective annual rate.

Public Provident Fund maturity at 7.1% (FY 2025-26) with year-by-year breakdown — tax-free EEE returns.

New vs old regime side-by-side — slab math, Section 87A rebate, marginal relief, surcharge and 4% HEC.

Calculate EMI and month-wise principal-interest split for fixed-rate loans.

Estimate years to double money or annual return needed using Rule of 72.

Calculate return on investment percentage and net gain instantly.

Estimate future value with annual inflation and time horizon inputs.

Calculate discounted price and savings from percentage markdowns.

Format SQL queries with dialect-specific rules.

Format JavaScript and TypeScript with Prettier rules.

Beautify and minify CSS, SCSS and Less.

Beautify, minify and validate XML documents.

Beautify and minify HTML with attribute wrapping and indent control.

Test regex with live highlights, groups and replace preview.

Build regex visually from common patterns.

Escape and unescape strings for JSON, JavaScript, C#, CSV, HTML, and shell workflows with copy-ready output for fast debugging.

Inline character-level diff between two strings.

Convert Unix epoch ↔ ISO 8601 / human dates with timezone support.

Decode cron expressions into plain English, preview upcoming run times, and verify 5/6/7-field crontab schedules before deployment.

Parse a UA string into browser, OS and device details.

IPv4 CIDR math — netmask, network, broadcast, host range and binary view.

Convert local timestamp placeholders across common world time zones.

Break any URL into protocol, host, port, path, query, and fragment, with the query string decoded into readable key/value pairs — all client-side.

Convert Unix file permissions between checkbox, octal (755), and symbolic (rwxr-xr-x) notation with setuid, setgid, and sticky bits.