Edit, compress, merge, convert files entirely in your browser. Your files never leave your device. Works offline.
Get Started FreeYour files are processed on your device and are never uploaded to our servers.
No waiting for uploads or downloads. Get instant results right in your browser.
All tools work directly in your browser. Nothing to install on your computer.
Combine multiple PDF files into one document.
Add text, highlights, annotations and whiteout to PDFs.
Reduce PDF file size without quality loss.
Extract pages or split into multiple files.
Add text watermarks to every page of a PDF.
Password protect and encrypt PDF files.
Convert PDF pages to JPG or PNG images.
Convert PDF to Word, CSV, JPG or PNG.
Reduce image file size to a target KB.
Convert images to PDF instantly.
Change image dimensions and reduce file size.
Cut and crop images to any aspect ratio.
Format and validate JSON data instantly.
Convert between JSON and YAML formats.
Decode and verify JSON Web Tokens.
Live Markdown editor with GFM preview.
Create and edit .docx files in your browser — no upload.
View and edit spreadsheets (.xlsx, .csv) in browser.
Create and edit .pptx slideshows in your browser — no upload.
Create and edit .pptx slideshows in your browser — no upload.
Generate unique IDs (v1 & v4).
Create strong, secure passwords.
Pick random numbers from any range.
Calculate exact age and date differences.
Decode Base64 strings to images.
Convert images to Base64 strings.
Convert between hex and ASCII text.
MD5, SHA-1, SHA-256, SHA-512 hashes.
Generate SHA-256 hashes instantly.
Convert epoch timestamps to dates.
Boost focus with timed work sessions and breaks.
InBrowserTools is a privacy-first file processing suite that runs entirely in your browser. Unlike Smallpdf, ILovePDF or TinyWow, your files are never sent to any server — every PDF edit, image compression and document conversion happens on your own CPU using WebAssembly and browser-native APIs. This makes it a genuine zero-knowledge PDF editor and a safe GDPR-compliant PDF editor for individuals, law firms, healthcare providers and small businesses.
Whether you need to merge PDF online free, compress PDF to 200KB, split PDF pages online, edit PDF text free online, or add watermark to PDF online — every operation runs locally. The same applies to image tools: compress image to target KB, resize image for social media, crop image online without upload, and convert image to PDF free all work with zero server contact.
For developers, the suite includes a JSON formatter and validator, JWT decoder online, UUID v4 generator, SHA256 hash generator online, Unix timestamp to date converter, hex to ASCII converter, and Base64 to image decoder — all processed client-side with no data logging. For productivity, the Pomodoro timer for study online and Age calculator by date of birth round out a comprehensive browser-only toolkit.
Use this as your secure document tool for lawyers. Password-protect contracts, watermark NDAs, merge case files and compress court submissions — all without uploading confidential client documents to a third-party server. A true HIPAA-safe PDF converter and no-server file editor.
A complete suite of developer tools: secure password generator (16 characters), MD5 hash calculator online, YAML to JSON converter, markdown previewer with GFM, and a random string generator. Process API payloads, decode tokens and generate test data instantly.
Quickly reduce image file size without losing quality, convert PNG to JPG online, WEBP to JPG, remove image metadata for privacy, or run a batch image compressor. No account, no watermarks — just fast, online image editing for privacy.
Edit .docx online free with no upload, open Excel files in browser, convert Word to PDF privately, or use the Presentation Editor for .pptx files. These private file utilities for business replace subscription software for everyday document tasks.