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
Is this a legally binding e-signature?
No — it draws your signature onto the page visually. It doesn't provide the identity verification or audit trail of a certified e-signature service, so it's meant for informal or internal documents rather than legally enforceable contracts.
Can I save my signature for reuse?
Not currently — you draw it fresh each time, and nothing is stored.
Can I draw with my finger on a phone?
Yes — the signature pad uses pointer events, which respond to mouse, touchscreen finger input, and stylus/pen input the same way.
Can I choose exactly where the signature goes?
You choose from 5 positions — bottom right, bottom left, top right, top left, or center — plus a size slider from 10% to 50% of the page width. There isn't free-drag placement.
Can I sign a page other than the first?
Yes — enter any page number before running the tool.
Can I add more than one signature to a document?
Run the tool once per page you need signed — each run places one signature and produces a new file, which you can then re-upload to sign a different page.
What if I don't like how my signature looks?
Tap Clear to reset the pad and draw again as many times as you want before placing it — nothing is finalized until you run the tool.
Is my signature stored or sent anywhere?
No — it's captured directly from the canvas and embedded into the PDF using pdf-lib, entirely in your browser. It's never uploaded or saved.
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.
Sign PDF, in depth
100% free, browser-only, no registration, works on mobile, draw with mouse, finger, or stylus.
Features
Draw Anywhere
A signature pad that responds to mouse, finger, or stylus input via pointer events, so it works the same on a phone as a laptop trackpad.
5 Placement Presets
Bottom right, bottom left, top right, top left, or dead center — pick from a dropdown instead of dragging by hand.
Adjustable Size
Scale the signature from 10% to 50% of the page width with a slider.
Any Page
Type the page number to sign — not limited to the first or last page.
Redo Instantly
Clear the pad and redraw as many times as you want before placing it.
Private by Design
Your signature is drawn to a canvas and embedded directly in the browser — never uploaded anywhere.
Why use Sign PDF
- Add a visual signature to an informal document — an internal form, a note, a personal agreement — without printing and rescanning it.
- Initial or sign a specific page in a longer document without opening desktop software.
- Sign on the device you already have open, including a phone, without installing an app.
- Quickly place a signature exactly where it needs to go using position presets instead of eyeballing coordinates.
Supported uses
Internal Forms
Informal Agreements
Page Initials
Personal Documents
Quick Approvals
Signing on Mobile
How TechDriven Tools compares
| Feature | TechDriven Tools | Other Online Tools | Desktop Software | Command-Line Tools |
|---|---|---|---|---|
| Privacy | Never leaves your device | Usually uploads to a server | Local, but needs install | Local, fully offline |
| Cost | Always free | Often capped or paywalled | Often paid | Free, but not beginner-friendly |
| Installation | None — runs in browser | None | Download & install required | Requires tools installed first |
| Legally binding e-signature | No — visual only | Sometimes (paid tiers) | Varies | No |
| Mobile-friendly | Yes, touch drawing built in | Varies by site | No | No |
Privacy
- Your drawn signature is captured from the canvas and embedded into the PDF entirely in your browser.
- Nothing is ever uploaded — not the document, and not your signature.
- No registration or account required to use any of this.
- Downloads come straight from your browser's own memory to your device.
What is Sign PDF
Sign PDF lets you draw a signature directly in your browser and place it visually onto a page of a PDF, at a size and position you choose. It's a visual signature — the drawn image is embedded onto the page — not a cryptographically certified e-signature with identity verification and an audit trail.
Benefits
For everyday, informal signing needs — initialing a form, approving an internal document, signing something for personal use — drawing and placing a signature in the browser is faster than printing, signing by hand, and scanning back in, and works from any device with a browser.
Visual Signature vs. Certified E-Signature
This tool draws your signature as an image and places it on the page — visually identical to a handwritten signature, but without the identity verification, audit trail, or tamper-evidence a certified e-signature service (used for contracts requiring legal enforceability) provides. For genuinely binding agreements, use a dedicated certified e-signature service; for everyday internal or informal documents, a visual signature is often all that's needed.
Best Practices
- Draw slowly and steadily — a signature drawn quickly with a mouse can look choppier than one drawn with a finger or stylus on a touchscreen.
- Preview the size slider before finalizing — 15-20% of page width matches a typical handwritten signature's proportions on a standard page.
- Double-check the page number field if signing a multi-page document — it defaults to page 1.
Common Mistakes
The most common mistake is assuming this produces a legally certified signature — it doesn't, and isn't meant to for documents that require one. The second is not clearing and redrawing a messy first attempt; the Clear button resets the pad instantly, so there's no reason to place a signature you're not happy with.
Security
Because the signature is drawn on an in-browser canvas and placed onto the PDF using pdf-lib without any network request, neither your document nor your signature is ever transmitted anywhere.
Mobile Signing
The signature pad accepts touch input directly, so signing with a fingertip on a phone works the same way as drawing with a mouse on desktop — draw, choose position and size, and download.