Convert JPG to PDF
at 350KB
Turn one or many images into a single PDF that lands right around 350KB — a comfortable mid-range cap that keeps scans sharp while still passing portal size limits. This page opens with the 350 KB target already selected, so you just add images and convert. It handles jpg to pdf 350 kb, under 350KB and less-than-350KB requests alike.
Need the images smaller first? Use the image compressor to hit a KB limit, or the image converter to turn HEIC or PNG into JPG before you build the PDF.
Kodotools Team · Last updated: January 2026 · Files stay on your device
About this tool
A free, browser-based converter that makes a JPG to PDF at 350KB — sized for portals that cap uploads around a third of a megabyte. The 350KB target is chosen for you; change it any time. No file ever leaves your device.
Who needs this?
- Anyone told to upload a document PDF around 350KB
- Applicants on portals with a 300–400KB ceiling
- People merging multi-page scans that must stay near 350KB
Drop your JPG images here
or click to browse · add as many as you like
Reading your images
Loading the selected files locally. This can take a moment for large photos.
0 images ready
Drag to reorder — page order follows the list.
Preview
How each page will look in the PDF
Target PDF size
What fits in a 350KB PDF?
350KB is a generous budget for documents. A multi-page scan, a couple of full-colour photos, or a detailed ID card all fit at 350KB with room to keep text crisp and edges clean. Combine three or four busy photos into one PDF at 350KB and each page still gets close to 90KB, so compression stays barely noticeable. It's the sweet spot when 100KB is too tight but you still need to stay under a half-megabyte cap.
Need a tighter file? The same engine powers the main JPG to PDF converter, plus presets for 150KB and below 100KB.
How JPG to PDF at an exact KB works
A PDF built from photos is mostly just the images inside it, so its size is set almost entirely by them. To get a JPG to PDF at 350KB, the tool re-encodes each image at the highest JPEG quality that still fits — scaling down only if needed — until the whole PDF measures at or below 350KB. Everything is measured live in your browser, so you see the real size before you download.
Add your images
Drop one JPG or many. Reorder them so the pages come out in the right sequence.
Set the target
Pick a page size and a KB limit — 350KB is preselected, or type your own number.
Convert & download
Hit convert. See the final size, then download your PDF. Done.
Why set the PDF size in KB?
Most "convert jpg to pdf" tools give you whatever file size they feel like. That fails the moment a portal caps uploads at a fixed number. Setting the size in KB is what turns a generic converter into something you can actually submit.
- Job & government forms: many require a document PDF under 100KB, 150KB, or 300KB.
- Visa & university portals: common ceilings are 300KB, 400KB, 450KB and 500KB.
- Very strict uploads: some ask for a JPG to PDF at 80KB or even below — this tool can hit those too.
- Email & chat limits: a smaller PDF sends faster and won't bounce on attachment caps.
Kodotools vs typical JPG-to-PDF sites
| Feature | Kodotools | Typical online tools |
|---|---|---|
| Exact KB target | Yes — type any KB | Rarely — fixed output |
| Files uploaded to a server | Never — 100% browser | Usually yes |
| Multiple images in one PDF | Yes, reorderable | Sometimes |
| Signup / watermark | Free, no signup | Varies |
Tips for a small, readable PDF
Keep text legible at 80KB
For a scanned document, crop out empty margins before converting — the tool then spends the KB budget on the text, not blank space, so a JPG to PDF at 80KB stays readable.
A4 vs "fit to image"
Choose A4 or Letter when a form expects a standard page. Use Fit to image for photos, ID cards, or receipts where you don't want white borders.
Very small targets
A busy, colourful photo can't always reach a tiny limit without going blurry. If the PDF stays above target, the tool tells you and gives you the smallest version it could make.
Compress the image first
Starting from a huge phone photo? Run it through the image compressor first for the cleanest result at strict limits.
FAQ
Common questions
How do I make a JPG to PDF at 350KB?
Add your JPG (this page already has the 350 KB target selected), then press Convert to PDF. The tool encodes the image at the best quality that fits and shows the exact size before you download.
Can I combine several JPGs into one 350KB PDF?
Yes. Drop or select several images and each becomes its own page. Drag the rows to set the page order, then convert them into one PDF that targets 350KB total.
Is 350KB enough to keep my scan sharp?
350KB is a comfortable budget — a scanned form or ID card stays crisp and readable, and even a couple of colour photos look clean. Quality only softens if you pack many detailed photos into one file.
What if my PDF comes out under 350KB?
That is fine — 350KB is a ceiling, not a requirement. A smaller file still uploads and stays sharp. If you need it even smaller, lower the KB target or use the 150KB and below-100KB presets.
Are my files uploaded to a server?
No. The whole JPG to PDF conversion runs locally in your browser. Your images and the finished PDF never leave your device.
Does it work on a phone?
Yes. It runs in Android and iOS browsers, so you can make a 350KB PDF straight from photos on your phone.
Guides
Real use-cases, step by step
Practical walk-throughs for the most common forms with strict size limits.
Ready to make a PDF at 350KB?
Jump back to the tool, set your KB target, and download your PDF in one pass.
Convert to PDF →