Every file you touch here stays on your machine.
PDF, image, developer, SEO, text, student and business tools — all free, all entirely in your browser. No upload, no account, no server ever sees your data.
The toolset
Focused tools covering the everyday PDF work — pick one to get started, no account needed.
How this actually works
Each tool runs entirely with JavaScript already loaded in this page — PDF tools via pdf-lib and pdf.js, image tools via the browser's native Canvas API, and everything else with plain JavaScript. Your files or input are read into browser memory, processed, and handed back as a download or copyable result. This page itself is served by a small Laravel route; Laravel never sees your files either. The only backend in use is Supabase, and only for two optional things: signing in with a magic link, and — only if you're signed in — a log of which tool you ran and when. Two things have real limits worth knowing up front: Compress PDF flattens each page to a re-encoded image (great for scan-heavy PDFs, not ideal if you need selectable text after), and Word/Excel/PowerPoint ⇄ PDF conversion genuinely requires a server-side rendering engine, so it isn't included here — this build only ships tools that can honestly run client-side.
Questions people actually ask
What encryption does this use?
AES-GCM (256-bit), a modern, authenticated encryption standard, via the browser's own built-in Web Crypto API — not a custom or hand-rolled cipher.
How is the key derived from my password?
PBKDF2 with a random salt and a high iteration count, the standard way to turn a human password into a cryptographic key resistant to brute-forcing — the same category of approach real password managers use.
What if I forget the password I encrypted with?
There's no recovery — the encrypted text can only be decrypted with the exact same password. If it's lost, the encrypted text is permanently unreadable, by design.
Can I decrypt text encrypted somewhere else?
Only if it was encrypted with the exact same method (AES-GCM, PBKDF2 key derivation, same salt/IV encoding format) — this isn't a general-purpose decryptor for arbitrary encrypted data or other tools' output.
Is the encrypted output safe to share, e.g. by email?
The encrypted text itself is safe to share as ciphertext — but never share the password through the same channel, or the encryption provides no real protection.
Is my password or text sent anywhere?
No — encryption and decryption happen entirely in your browser using the Web Crypto API; neither your password nor your text is ever transmitted.
Why use this instead of a real encrypted messaging app?
For quick, occasional needs — encrypting a note before pasting it somewhere, or a password before sharing it through an otherwise-insecure channel. For ongoing secure communication, a dedicated encrypted messaging app is the better tool.
What output format does the encrypted text use?
A single Base64-encoded block containing the salt, initialization vector, and ciphertext together — paste that whole block back in to decrypt, along with the same password.
Is this really free, and is there a file size limit?
Yes — no account, no paywall. Since processing happens in your browser's memory rather than uploading anywhere, the practical limit is your device's available RAM, not a server quota. Very large files (500+ pages) may run slower, especially for Compress and PDF→JPG.
Does anything about my file get sent anywhere?
No. Every tool runs with pdf-lib/pdf.js loaded in this page; your file is read into browser memory and never leaves it. The only network call this app makes for your account is Supabase auth — and that only stores which tool you ran and when, never file content.
Why isn't Word/Excel/PowerPoint → PDF included?
Converting Office formats accurately needs a real rendering engine (what Word or LibreOffice use internally) — no browser library does this reliably. Rather than ship a broken version, it's left out.
Does TechDriven Tools have OCR (text recognition)?
Yes — OCR PDF recognizes text in scanned or photographed pages using Tesseract.js, running entirely on your device, and gives you a searchable PDF or a plain text file. Nothing is uploaded for this either.
Can I use this without an internet connection?
Once the page and its libraries have loaded once, yes — the tools themselves need no network access. Signing in and viewing history do require a connection, since those talk to Supabase.
What happens to the "history" if I sign in?
Only a row per tool run — the tool's name and a timestamp. No filename, no file content, ever. You can see the full list any time via the History button.
Are the non-PDF utilities (password generator, JSON formatter, etc.) private too?
Yes — same rule as the PDF tools. Word Counter, Case Converter, Password Generator, UUID Generator, Base64, Hash Generator, JSON Formatter and JWT Decoder all run with plain JavaScript already loaded in this page; nothing you type or paste is sent anywhere.