Free online tools, right in your browser
Fast, free online utilities that work like any web tool — except nothing is ever uploaded. Everything runs on your device, so your files never leave your machine. No sign-up, no limits, private by design.
PDF Tools
Compress, merge, split, edit and convert PDFs — all in your browser, nothing uploaded.
PDF Compressor
Shrink large PDFs — runs entirely in your browser, files never leave your machine.
PDF Editor
Add text, highlights, shapes and images; reorder, rotate or delete pages — all in your browser.
Merge PDF
Combine PDF files into one, with page reordering — files never leave your machine.
Split PDF
Extract pages, split by ranges, or save every page separately — all in your browser.
Anything to PDF
Turn Markdown, JSON, XML, YAML, CSV, HTML, plain text — or a stack of images — into a polished PDF, all in your browser.
Image Tools
Compress, convert and change image formats privately — your photos never leave your device.
Image Compressor
Shrink JPG, PNG and WebP images with a quality slider — compressed on your device, never uploaded.
Image Converter
Convert between PNG, JPG and WebP right in your browser — your images never leave your machine.
HEIC to JPG
Turn iPhone HEIC photos into universal JPGs — converts locally in your browser, nothing uploaded.
Developer Tools
Encode, decode, format and generate — JWT, QR codes, Base64, hashes and more, all in your browser.
QR Code Generator
Turn any URL or text into a downloadable QR code (PNG or SVG) — generated in your browser, nothing sent to a server.
JWT Decoder
Decode a JSON Web Token's header and payload, read its claims and expiry, and verify HS256 signatures — all in your browser.
Base64 Encode / Decode
Encode text to Base64 or decode it back, UTF-8 safe — runs entirely in your browser, nothing uploaded.
JSON Formatter
Beautify, minify and validate JSON with clear error messages — processed locally in your browser, never uploaded.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text — computed in your browser, nothing sent anywhere.
UUID Generator
Generate random version-4 UUIDs in bulk with one click — created locally in your browser, nothing uploaded.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back, in local, UTC and IST — all in your browser.
Online tools that never upload your files
Most online PDF tools upload your file to a server, process it there, and send it back. ThekkelSoft tools work differently: the page you load is the tool. All processing happens in your browser using WebAssembly and JavaScript — so they work like any online tool, but your files never leave your device. They even keep working if you go offline.
Why ThekkelSoft
Truly private
Your files are processed on your device and never uploaded, stored, or seen by anyone.
Free, no sign-up
Every tool is completely free — no account, no watermarks, no file limits.
Works offline too
Once a tool page has loaded, it keeps working even without an internet connection.
Frequently asked questions
Are ThekkelSoft's online tools really free?
Yes. Every tool is completely free, with no sign-up, no watermarks, and no file limits.
Do my files get uploaded to a server?
No. Everything runs locally in your browser. Your files are never uploaded, stored, or seen by us.
How can an online tool work without uploading my files?
The tool itself is delivered to your browser as code, and all processing happens on your device. Once a tool page has loaded, it even works offline.
Which PDF tools can I use online?
You can compress, merge, split, and edit PDFs, and convert text, Markdown, code, or images to PDF — all free, in your browser.
Do I need an account?
No account is needed for any of the free tools.