JPG to PDF Under 400 KB
Convert JPG to PDF 400 KB or smaller: combine photos or scans into one PDF under the limit your form sets, or add a PDF you already have to compress it. Text stays readable.
JPG to PDF under 400 KB · Step 1 of 3 · Add your photo
Drop images or a PDF to make a PDF under 400 KB
or paste with Ctrl+V · JPG PNG WebP HEIC or PDF · up to 5 files
Processed on this device. Nothing is uploaded.
Image to PDF
JPG to PDF under a size limit
Example
Before and after
We ran this sample through the jpg to pdf under 400 kb tool above. The numbers under each image are measured from the real files.
Sample made by the SizePort team, not a real document.
How to
How to convert JPG to PDF under 400 KB
- 1.
Add your pages. Photos or scans of each page, or a PDF you already have, in the order they should appear. About 4 to 6 scanned A4 pages stay readable under 400 KB.
- 2.
Keep the 400 KB limit. It is already set. The tool builds the PDF, or compresses yours, until it is under 400 KB: about 200 KB a page for two pages, 80 KB for five.
- 3.
Download the PDF. Check the size shown, then upload it to your form.
Why this size
Why forms ask for a PDF under 400 KB
400 KB gives each page plenty of room: 4 to 6 scanned pages stay sharp, or one or two pages keep almost full photo quality. It suits documents with small print, stamps or signatures that must stay legible.
A PDF you already have works too: add it instead of photos and it is compressed under 400 KB, with typed text kept as text. If you still have the original photos or scans, adding those often gives sharper pages.
| Size limit | Readable A4 pages |
|---|---|
| Under 300 KB | 3 to 5 |
| Under 400 KB (this page) | 4 to 6 |
| Under 500 KB | 5 to 8 |
Use cases
What people turn into a PDF under 400 KB
Job applications
Several documents combined into the single PDF a portal asks for.
University admissions
Mark sheets and certificates for online admission forms.
Bank and KYC
ID and address proof as one PDF.
Compare
How 400 KB splits across pages
Every page shares the limit. Fewer pages means more detail on each one.
| Pages in the PDF | Room for each page |
|---|---|
| 1 | about 400 KB |
| 2 | about 200 KB |
| 3 | about 133 KB |
| 5 | about 80 KB |
| 10 | about 40 KB |
Tips
Tips that make a difference
Photograph in daylight
Follow the form's order
Fewer pages, sharper text
FAQ
JPG to PDF under 400 KB: questions
Checked
How we checked this page
Checked by the SizePort team on .
We test the tool with sample photos before it goes live and check that the sizes on this page match what it produces. Rules and platforms change, so if something here is out of date, tell us and we will correct it.
How the tool works
Each image becomes one page of a PDF built in your browser, and a PDF you add keeps all its pages, in the order you add the files. With a size limit, the tool first compresses the photos inside the PDF, quality first and size second, while typed text, links and drawings stay as they are, so the text can still be selected. Only if that is not enough is each page drawn with pdf.js (Mozilla, Apache 2.0) and saved as an image, smaller pages before lower quality, until the whole file is under the limit. Nothing is uploaded. Everything happens in your browser; your images are never uploaded.