Are my files uploaded anywhere?

No. Every PDF you drop stays in your browser. The processing engine (MuPDF + pdf-lib, compiled to WebAssembly) runs entirely in a Web Worker on your machine. We don't have a server that touches your files — we couldn't even if we wanted to.

Is there a file size limit?

Only what your device can handle. We've tested files up to 500 MB and 1,000+ pages on a typical laptop. Larger files work too if you have the RAM.

Do I need to sign up?

No accounts, no email, no payment. The full app is available to anyone with a browser. Bookmark it and use it daily.

Which browsers are supported?

Chrome, Edge, Firefox, and Safari (16.4+) on desktop and mobile. The app uses modern web APIs (WebAssembly, OPFS, Web Workers); older browsers may have limited functionality.

Can I use this on my phone?

Yes. The app works on iOS Safari and Android Chrome. Drop a PDF from Files / Photos / Drive, run any tool, and download the result back to your device.

Is the source code open?

Yes. The full source is on GitHub under a permissive license. Audit the code, run it yourself, or self-host.

Because it costs us almost nothing to run — there's no server-side processing. The site is just static HTML and JavaScript. We don't sell your data because we don't have it.

Every tool you need,
running in your browser.

Free online tools that run 100% in your browser — PDF, text, encoders, generators, converters, hashing. Your files and data never leave your device.

All 67 tools

Merge PDF Files — Combine multiple PDFs into one. Drag to reorder, no file size limits, no uploads. Free PDF merger that runs in your browser.
Split PDF — Split a PDF into separate files by page range, every N pages, or one file per page. Free, private, runs in your browser.
Compress PDF — Shrink PDF file size while keeping quality. Re-encode embedded images, strip metadata, subset fonts. Free, private, runs in your browser.
Rotate PDF Pages — Rotate PDF pages 90°, 180°, or 270°. Apply to all pages, odd, even, or specific pages. Permanent rotation, free, in-browser.
Reorder PDF Pages — Rearrange PDF pages with drag-and-drop. Move pages, reverse order, swap. Free, private, runs in your browser.
Delete Pages from PDF — Remove unwanted pages from a PDF. Click to select, invert selection, delete. Free, private, runs in your browser.
Convert PDF to Images — Convert PDF pages to PNG, JPEG, or WebP at custom DPI. Page range, quality control. Free, private, in-browser.
Convert Images to PDF — Combine JPG, PNG, WebP images into a single PDF. Reorder, choose page size and fit. Free, private, in-browser.
Extract Text from PDF — Pull all text from a PDF as plain text, Markdown, or JSON with positions. Includes form-field values. Free, in-browser.
Annotate PDF — Add highlights, underlines, strikethroughs, freehand drawings, and notes to any PDF. Free, in-browser, no uploads.
Add Watermark to PDF — Stamp every page with a text or image watermark. Position, opacity, angle, tile mode. Free, private, in-browser.
Password Protect PDF — Encrypt a PDF with AES-256 (or remove an existing password). Permission flags for printing and copying. Free, private, in-browser.
Fill PDF Forms — Fill text fields, checkboxes, dropdowns, and radio buttons in any AcroForm PDF. Save the filled form. Free, in-browser.
Sign PDF — Add a signature to any PDF. Draw, type, or upload an image. Click on the page to position. Free, private, in-browser.
Redact PDF — Permanently delete sensitive text from a PDF. Real redaction (not just black boxes). Free, private, in-browser.
Crop PDF — Crop PDF pages by dragging a rectangle on the page preview. Apply to all pages or a range. Free, private, in-browser.
Repair Corrupt PDF — Fix broken xref tables, missing EOF, corrupt object streams. MuPDF-powered PDF recovery. Free, private, in-browser.
Edit PDF Metadata — View and edit PDF metadata: title, author, subject, creation date. Or scrub all metadata. Free, private, in-browser.
Flatten PDF — Bake annotations and form fields into static page content. Makes PDFs print-ready and tamper-proof. Free, in-browser.
Compare Two PDFs — Compare two PDF versions side-by-side with pixel diff and word-level text diff. Free, private, in-browser.
Edit PDF Bookmarks — Add, rename, reorder, and nest PDF bookmarks (outline). Tree editor with drag and drop. Free, private, in-browser.
Text to PDF Converter — Paste text or upload a .txt file, get a clean formatted PDF. Choose page size, font, margins. Free, private, in-browser.
PDF to Word Converter — Convert PDF text to an editable Word (.docx) document. Free, private, runs in your browser — no uploads.
PDF to Markdown Converter — Convert PDF text into clean Markdown with page headings. Perfect for docs, blog posts, README files. Free, in-browser.
Add Text to PDF — Type text on any PDF page. Drag to position, choose font and color. Free, private, runs in your browser.
Case Converter — Convert text between UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE. Free, instant, in-browser.
Word Counter — Count words, characters, sentences, paragraphs, lines. Reading and speaking time estimates. Most-used words. Free, instant, in-browser.
Text Cleaner — Clean messy text: remove duplicate lines, empty lines, HTML tags, extra whitespace. Sort lines. Free, in-browser, no uploads.
Base64 Encoder & Decoder — Encode text to Base64 or decode Base64 back to text. UTF-8 safe, URL-safe variant. Free, in-browser, no uploads.
URL Encoder & Decoder — Percent-encode and decode URL strings. Component vs full-URL modes. Free, instant, browser-only.
HTML Entities Encoder & Decoder — Encode HTML entities (&, <, >, ") or decode them back to text. Optional numeric entity mode for non-ASCII. Free, in-browser.
Binary to Text Converter — Convert text to binary (8-bit octets) or binary back to readable text. UTF-8 safe. Free, instant, in-browser.
Lorem Ipsum Generator — Generate Lorem Ipsum placeholder text — paragraphs, sentences, or words. Optional classic opening. Free, in-browser.
Strong Password Generator — Generate strong random passwords with custom rules. AES-quality entropy via Web Crypto. Bulk generation. Free, in-browser, never logged.
UUID Generator — Generate version-4 UUIDs in bulk. Standard, no-dashes, uppercase, or braces format. Free, in-browser.
JSON Formatter & Validator — Format, validate, and minify JSON in your browser. Live error messages. Free, instant, no uploads.
Number Base Converter — Convert numbers between binary, octal, decimal, and hex. BigInt-backed — works for arbitrarily large integers. Free, in-browser.
Color Converter — Convert colors between HEX, RGB, and HSL with live preview. Native picker. Free, instant, in-browser.
Unix Timestamp Converter — Convert Unix timestamps (seconds or milliseconds) to human-readable dates and back. Auto-detects unit. Free, in-browser.
Hash Generator (MD5, SHA-1, SHA-256, SHA-512) — Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for any text. All four at once, in your browser. Free, no uploads.
AES Encrypt & Decrypt — Encrypt or decrypt text with AES-GCM 256-bit, key derived from your passphrase via PBKDF2. Free, in-browser, never sent to a server.
JWT Decoder — Decode JWT tokens — view header, payload, and signature. Validates structure. 100% client-side. Free.
ROT13 & Caesar Cipher — Apply ROT13 or any Caesar-cipher shift to text. Brute-force decode mode shows all 25 shifts. Free, in-browser.
YAML ↔ JSON Converter — Convert YAML to JSON or JSON to YAML. Live, validated, in your browser. Useful for Kubernetes, CI configs, OpenAPI.
CSV ↔ JSON Converter — Convert CSV to JSON arrays or JSON back to CSV. Quoted fields, custom delimiters. Free, in-browser, no uploads.
XML Formatter — Pretty-print, minify, and validate XML in your browser. Live error messages. Free, no uploads.
Regex Tester — Test JavaScript regex patterns against any text. Live match highlighting, capture groups, all flags. Free, in-browser.
Diff Checker — Compare two texts side-by-side with line-by-line diff highlighting. Added, removed, changed lines colour-coded. Free, in-browser.
QR Code Generator — Generate QR codes for URLs, text, Wi-Fi, vCards. Custom error-correction, size, margin. Download PNG or SVG. Free, in-browser.
Length Converter — Convert any length unit instantly: cm, m, km, in, ft, yd, mi, mm, nm. Live multi-unit display, copy any value. Free, in-browser.
Weight Converter — Convert kg, lb, oz, stone, ton, gram, mg side-by-side. Live multi-unit display. Free, in-browser, instant.
Temperature Converter — Convert °C, °F, K, Rankine. Live multi-unit display. Free, instant, in-browser.
Data Size Converter — Convert bytes, KB, MB, GB, TB, PB across decimal (SI) and binary (IEC) units. Live multi-unit display. Free.
GST / VAT Calculator — Calculate GST, VAT, sales tax. Add or remove tax from any price. India, EU, UK, AU, NZ, CA presets. Free, in-browser.
Compound Interest Calculator — Compute future value of investments with compound interest, monthly contributions (SIP), and inflation-adjusted returns. Free.
Crypto Currency Converter — Convert Bitcoin, Ethereum, USDT, BNB, Solana to USD, EUR, INR, GBP, JPY at live rates. Free, in-browser.
Income Tax Calculator (India FY 2025-26) — Compute Indian income tax for FY 2025-26 (AY 2026-27). Old vs New regime side-by-side, all deductions (80C/HRA/medical), with surcharge & cess.
BMI Calculator — Calculate BMI from height and weight. Metric or imperial. Get category, healthy range, and personalised tips. Free, in-browser.
Calorie Counter (BMR & TDEE) — Compute BMR, TDEE, and daily calorie targets for fat loss, maintenance, or muscle gain. Macro split included. Free.
Body Age Calculator — Estimate biological age from sleep, exercise, diet, smoking, alcohol, stress, and BMI. Free, in-browser.
Body Fat Calculator (US Navy Method) — Calculate body fat % using the US Navy circumference method (neck, waist, hip). Accurate to ±3-4% vs DXA. Free.
Image Compressor — Shrink your photos and images by up to 80% without losing quality. Works for JPG, PNG, WebP and AVIF. 100% private — your files never leave your browser.
Image Format Converter — Convert your images between JPG, PNG, WebP and AVIF in seconds. Drop one image or a whole folder. Free, in your browser, no uploads.
Image Resizer — Resize images for iPhone wallpaper, Instagram, Twitter, Facebook, LinkedIn, YouTube and more. Pre-set sizes for every device and platform. Free, in-browser.
Image Cropper — Crop images with drag handles and aspect-ratio presets (1:1, 4:5, 9:16, 16:9). Lossless preview, JPG/PNG/WebP/AVIF output. Free.
Favicon Generator — Generate a complete favicon pack: .ico, Apple Touch Icon, Android Chrome icons, manifest, plus HTML snippet. Free, in-browser.
Photo Metadata Viewer & Cleaner — See what's hidden inside your photos — camera details, date, and even your GPS location. One click removes it all before you share. Free, private, in-browser.

Every tool you need,running in your browser.

All 67 tools

Every tool you need,
running in your browser.