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
Can I mix JPG and PNG files in one PDF?
Yes — add any combination and they'll combine into one PDF, one image per page.
Can I reorder the images before converting?
Yes — drag them into the order you want on the options screen before running the tool; that order becomes the page order in the finished PDF.
How is each page sized?
Each page is sized to match its image's own proportions, capped at a sensible maximum width, so a portrait photo produces a portrait page and a wide screenshot produces a wide page.
What happens if one of my files is corrupted or not really an image?
It's skipped automatically, and the final status message lists which file names were skipped, so the rest of the batch still converts successfully.
How many images can I add at once?
There's no fixed limit beyond your device's memory — add as many as you need in one pass.
Does this crop, rotate, or straighten my images?
No — images are placed exactly as they are. If you're photographing a physical document and need cropping, rotation, or a scan-style cleanup, use Scan to PDF instead.
Can I reorder pages after the PDF is created?
Not in this tool — reorder the images in the upload list before running it, since that order becomes final in the output. To reorder an already-made PDF, use Organize PDF.
Is the quality reduced?
Only if an image exceeds the maximum page width, in which case it's scaled down proportionally; smaller images are embedded at their original resolution.
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.
JPG/PNG to PDF, in depth
100% free, browser-only, no registration, works on mobile, drag-to-reorder pages.
Features
Mix JPG and PNG
Combine any mix of image formats into a single PDF — one image per page.
Drag-to-Reorder
Drag images into the order you want before converting — that order becomes the page order.
Automatic Page Sizing
Each page is sized to match its image's proportions, capped at a sensible maximum width.
Bulk Conversion
Add as many images as you want in one pass — no one-at-a-time limit.
Skips Unreadable Files Safely
If a file can't be read as an image, it's skipped and named in the result instead of failing the whole batch.
Private by Design
Every image is embedded into the PDF entirely in your browser's memory.
Why use JPG/PNG to PDF
- Turn a folder of photos into one shareable file instead of sending images one by one.
- Combine screenshots into a single document for a bug report, tutorial, or reference.
- Package downloaded receipts or certificates that only exist as separate image files.
- Prepare a portfolio or photo set as one PDF instead of a zip of loose images.
- Convert existing clean scans already saved as JPG or PNG into a proper multi-page PDF.
Supported uses
Photo Collections
Screenshot Bundles
Receipts & Certificates
Portfolios
Existing Clean Scans
Multi-Photo Reports
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, needs setup |
| Reordering | Drag and drop before converting | Varies by site | Varies | Manual file ordering |
| Mixed formats | JPG + PNG together | Varies by site | Usually yes | Usually yes |
| Mobile-friendly | Yes | Varies by site | No | No |
Privacy
- Files are never stored — nothing is written to a server, ever.
- Every image is embedded into the output PDF using pdf-lib, entirely in your browser.
- No registration or account required to use any of this.
- Downloads come straight from your browser's own memory to your device.
What is JPG/PNG to PDF
This tool takes one or more image files and places each one, unmodified, onto its own page of a new PDF — the simplest way to turn a set of pictures into a single portable document. Unlike Scan to PDF, it doesn't crop, rotate, or enhance anything; it takes the images exactly as they are.
Benefits
A PDF is easier to share, print, and archive than a folder of loose image files — one link or attachment instead of several, in the order you choose, opening the same way in any PDF reader on any device.
How Page Order Works
The order images appear in the upload list is the order they become pages — drag any image to a new position before converting to change that order. There's no separate "sort" step; what you see in the list is exactly what you'll get in the output.
Image to PDF vs. Scan to PDF
These sound similar but solve different problems. JPG/PNG to PDF takes images you already have — screenshots, downloaded photos, existing clean scans — and combines them into a PDF exactly as they are. Scan to PDF is built specifically for photographing a physical document: it adds the crop, rotate, and grayscale/black-and-white steps a real scan needs, which a plain image-to-PDF conversion skips entirely. If your image is already a clean, cropped, upright picture, this tool is faster; if you're starting from a fresh photo of a piece of paper, Scan to PDF is the right one.
Best Practices
- Reorder images before converting — there's no way to reorder pages inside the finished PDF without using a separate tool afterward.
- If an image looks tilted or has visible background around a document, use Scan to PDF instead so it gets cropped and straightened first.
- Very large photos are automatically capped to a sensible maximum width per page, which keeps output file size reasonable without visibly affecting quality on screen.
Common Mistakes
The most common mistake is uploading images in the wrong order and only noticing after downloading — always check the drag list before running the tool. The second is expecting cropping or straightening, which this tool intentionally doesn't do; that's what Scan to PDF is for.
Security
Since every image is read directly into your browser's memory and embedded there, combining private photos, receipts, or scanned documents into a PDF never means trusting a server with them first.
Mobile Use
Adding photos straight from your phone's camera roll and reordering them by touch works the same as on desktop — the finished PDF downloads straight to your device.