Convert JPG to PDF
30 KB
Shrink a scan or photo into a single PDF that lands under 30KB — the kind of ultra-tight limit strict government forms and old upload portals still enforce. This page opens with the 30 KB target already selected, so you just add an image and convert. Need it even smaller? It reaches jpg to pdf 10 kb and 20KB territory too.
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 under 30KB — built for the strictest upload caps. The 30KB target is chosen for you; drop it lower for 10KB or 20KB. No file ever leaves your device.
Who needs this?
- Anyone told to upload a signature or document PDF under 30KB
- Exam and government forms that cap files at 10–30KB
- People shrinking a single scan or ID to the smallest usable PDF
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 30KB PDF?
30KB is a very tight budget, so this target works best for one simple page: a signature, a typed document, a clean black-and-white scan, or a single ID photo. Text and line art stay perfectly legible at 30KB — even at 10KB — because they compress well. A busy, full-colour photo can reach 30KB but will visibly soften, so crop out empty margins first and convert one image at a time for the cleanest result.
Have a little more headroom? The same engine powers presets for 80KB, below 100KB, and the main JPG to PDF converter.
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 under 30KB, the tool aggressively lowers JPEG quality and scales the image down until the whole PDF measures below 30KB. 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 — 30KB is preselected, or type 10 or 20 for even smaller.
Convert & download
Hit convert. See the final size, then download your PDF. Done.
When a form demands 20 KB or 30 KB
These are the strictest caps you will meet. A jpg to pdf 20 kb or jpg to pdf 30 kb requirement leaves almost no room, so the tool compresses hard and, if needed, scales the image down to squeeze under the number. It is built for the tightest uploads:
- Signature & thumbnail slots: many forms cap a signature or small photo PDF at 20KB or 30KB — this hits those exactly.
- Legacy government portals: older upload systems set very low ceilings; a 20–30KB PDF sails through.
- Single-page, mostly-text scans: a black-and-white document page is the realistic candidate for 20–30KB and still reads.
- A bit more room? If 20–30KB is too aggressive for your image, step up to 80KB or under 100KB.
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 |
Actually reaching 20–30 KB
Start with a plain, cropped scan
At 20–30KB there is no room for clutter. Crop tight to the content and use a plain document — a full-colour photo rarely fits this small while staying usable.
Grayscale is your friend
A black-and-white version of a form is a fraction of the size of colour, which is often the difference between hitting 20KB and not.
Expect some softness
At these sizes the tool trades sharpness for the KB limit. If the result stays above target, it shows you the smallest version it could make so you can decide.
Compress the image first
For a target this strict, pre-shrinking the photo in the image compressor gives the tool the best possible starting point.
FAQ
Common questions
How do I make a JPG to PDF 30 KB (or 20 KB) file?
Add your JPG (this page already has the 30 KB target selected), then press Convert to PDF. The tool compresses the image hard until the finished PDF is under 30KB and shows the exact size before you download.
Can I make an even smaller PDF, like 10KB?
Yes. Pick the 10 KB or 20 KB preset, or type your own number. Signatures, typed documents and clean scans reach 10KB while staying perfectly legible.
Why does my photo look blurry at 30KB?
A busy, full-colour photo needs more than 30KB to stay sharp, so it softens at this target. For the cleanest result, convert one image at a time and crop out empty margins first — or allow a slightly higher limit like 80KB.
Should I combine multiple images at 30KB?
For such a tight target, one page per PDF works best. Merging several images into one 30KB file leaves only a few KB per page, which blurs detail. Keep multi-image PDFs to higher targets.
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 sub-30KB PDF straight from photos on your phone.
Can it also make a JPG to PDF 20 kb file?
Yes. Type 20 as the target for a jpg to pdf 20 kb file. 20KB is very tight, so it works best with a plain, cropped, black-and-white scan — the tool will tell you if your image can't reach it.
Guides
Real use-cases, step by step
Practical walk-throughs for the most common forms with strict size limits.
JPG to PDF size guide: hit any KB target
How PDF file size works, which KB limit each form needs, and a tool for 30KB to 500KB.
Read guide →How to make an A4 PDF from JPG
Fit photos to a real A4 page, merge multiple JPGs, and set orientation and margins.
Read guide →NADRA photo requirements 2025
CNIC, NICOP, FRC specs and 100KB limits for id.nadra.gov.pk.
Read guide →Ready to make a PDF under 30KB?
Jump back to the tool, set your KB target, and download your PDF in one pass.
Convert to PDF →