About this tool
Combining images into a single PDF is the standard way to package receipts, scanned documents, ID cards, or any multi-image set into one shareable file. Recipients can view, sign, or print without opening 12 separate JPG files.
This tool converts JPG, PNG, WebP, and GIF images to a single PDF in your browser. Drag to reorder, set page size (A4, Letter, custom), orientation (portrait / landscape), and margins. Each image becomes one page; or stack multiple images per page in a grid.
How it works
Add images
Drop multiple images at once or pick in sequence. Each becomes a page in order.
Reorder if needed
Drag thumbnails to reorder.
Set page settings
A4 / Letter / Legal / custom. Portrait / landscape. Margin in mm.
Generate the PDF
Click "Convert". The PDF downloads to your device.
Use cases
Receipt bundles
Photograph 12 receipts on your phone, convert to one PDF, submit for expense reimbursement.
ID document scans
Front + back of passport / driver's license as a 2-page PDF for visa applications.
Contract signing scans
Scan a hand-signed contract page-by-page on a phone, convert to a single PDF for emailing.
Photo portfolios
Quick PDF portfolio of best shots for emailing to a client.
Format and spec details
| Source formats | JPG, PNG, WebP, GIF, BMP, HEIC |
|---|---|
| Page sizes | A4, Letter, Legal, A3, A5, custom mm |
| Orientation | Portrait or landscape |
| Layout | One image per page or grid (2x2, 3x3) |
Tips and best practices
- Compress large images (Image Compressor) before adding - keeps the PDF file size small.
- Match all images to the same orientation (portrait or landscape) before converting for cleaner pages.
- For ID scans, use the "1 image fills page with margins" preset.
- Run OCR on the resulting PDF if you need text extraction.
How to use the JPG to PDF
The JPG to PDF is a browser-based tool that runs entirely on your device. Inputs you enter never reach a server - all calculations happen client-side in JavaScript. This means:
- Privacy: nothing is logged, sent, or stored by 3Tej. Inputs disappear when you close the tab.
- Speed: results update as you type. No network round trip.
- Offline use: once the page is cached, it works without internet.
- No signup: no account, no email, no rate limits.
Step by step
- Enter your inputs in the form above. Each field is labeled with its unit (currency, percent, kg, etc.) and the expected range.
- Read the result as it updates. The number reflects the formula commonly accepted in JPG to PDF-related calculations.
- Adjust to see sensitivity: change one input at a time and watch how the output moves. This is the fastest way to understand which variable matters most.
- Copy or screenshot the result for later reference. The page state persists for the session if your browser allows it.
When you would use this
- Quick estimates: when you need a number now and don't want to open a spreadsheet.
- Sensitivity analysis: testing how a result changes as inputs vary, before committing to a real-world decision.
- Comparison: running the same calculation with different inputs to compare options side by side.
- Learning: building intuition for how the underlying math behaves.
- Documentation: capturing a snapshot of inputs and outputs at a point in time.
Privacy and offline operation
Every operation in this tool runs client-side using your browser's built-in APIs (Canvas, Web Audio, WebAssembly). No data is uploaded. After the initial page load you can disconnect from the internet and the tool keeps working.
We use Google Analytics and AdSense for the page itself, but neither sees the content of the files you process.
Frequently asked questions
Will the PDF be searchable?
Image-based PDFs are not text-searchable by default. Run OCR (e.g. Adobe Acrobat, ABBYY) on the result to add a searchable text layer.
Is the original image quality preserved?
JPG sources are embedded directly (no re-compression). PNG and WebP are converted to JPG-quality 90 by default - you can switch to lossless mode.
What is the maximum number of images?
No hard limit. 100+ images are routine; 1000+ may be slow on low-RAM devices.
Can I add a cover page?
Yes - include a cover image as the first file in the order.
Is the JPG to PDF accurate?
The JPG to PDF applies the standard formula for jpg to pdf. Accuracy is limited only by your input precision. For decisions with material consequences, use the result as a starting point and verify with a qualified professional or the relevant official source.
Is the JPG to PDF free?
Yes. 100% free, no signup, no payment, no API key. The site is funded by display ads that appear around the tool but not inside the calculation flow.
Are my inputs saved?
No. Inputs stay in your browser tab. Closing the tab discards them. The site uses Google Analytics for traffic measurement (anonymized) but does not see what you type into the form.
Can I use the JPG to PDF on my phone?
Yes. The tool is responsive and tested on iOS Safari, Android Chrome, and major desktop browsers. Touch targets meet Apple's 44pt and Google's 48dp minimum guidance.
How do I report a bug or suggest improvement to the JPG to PDF?
Email hi@3tej.com with the URL of this page and a description of what you saw vs expected. We typically respond within 72 hours and update calculators when rules or formulas change.
How accurate is the JPG to PDF?
It applies the standard formula. Accuracy is limited only by your input precision. For decisions with material consequences (taxes, medical, legal, structural), use the result as a starting point and verify with a qualified professional in the relevant field.
Is the JPG to PDF free to use?
Yes. 100% free, no signup, no payment, no API key. The site is funded by display ads around the tool but not inside the calculation flow.
Are my inputs saved anywhere?
No. All inputs stay in your browser tab. Closing the tab discards them. The site uses Google Analytics for traffic measurement (anonymized) but the analytics never see what you type into the form.
Does the JPG to PDF work offline?
Yes. Once the page has loaded, it works without internet. The calculation runs in JavaScript on your device.
Can I share results from the JPG to PDF?
Take a screenshot or copy the output. The page doesn't generate shareable URLs for specific calculations - inputs stay in your browser only.
Why are the results different from another jpg to pdf tool?
Most likely: different formula assumptions, different default values, different rounding rules, or different applicable rates. Check the methodology if both tools document it. Both can be valid for different scenarios.