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 sizes does it generate?
16×16, 32×32, 48×48, and 64×64 (classic favicon sizes), 180×180 (Apple touch icon), and 192×192 and 512×512 (the two sizes a PWA manifest typically needs) — 7 files total.
What format are the files?
PNG for every size — the modern standard that every browser and OS supports, rather than the legacy multi-resolution .ico format.
Do I need to rename the files after downloading?
They're already named by size (e.g. favicon-32x32.png), matching what most site templates and CMS favicon upload fields expect.
What image should I start with?
A square image works best — since every output size is also square, a non-square source gets stretched to fit rather than cropped.
Does it generate the actual favicon.ico file?
No — only PNGs. Nearly all modern browsers accept a PNG favicon directly (via <link rel="icon" type="image/png">); a legacy .ico is rarely required anymore.
Can I use a photo, or does it need to be a logo?
Either works technically, but a simple logo or icon reads far more clearly than a detailed photo once shrunk to 16×16 — worth keeping in mind for the smallest sizes specifically.
How do I use these on my own site?
Upload the PNGs to your site and link them with <link rel="icon"> tags for the browser sizes and reference the 192/512 ones from your manifest.json for PWA support.
Is my image uploaded anywhere?
No — every size is generated entirely in your browser using the Canvas API; nothing is uploaded.
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.