Convert JPG to PDF under 500 KB
Put a handful of pictures into one PDF of 500 KB or less. Add them in order and the limit is shared out between the pages.
- Runs in your browser
- Nothing is uploaded
- No sign-up
- Up to 20 pages in one PDF
Drag & drop your images here
or tap to browse · you can also paste from the clipboard
JPG · PNG · WebP · GIF · BMP · AVIF · SVG · up to 50 MB each · up to 20 files
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How to use the JPG to PDF 500 KB converter
Add your pictures in order and download: the limit is preset to 500 KB and is shared between the pages. Three to five pages of ordinary print stay readable at this size. Use the arrows on each picture to change the order of the pages.
- Add your picturesUp to 20, one page each. Three to five pages suit this limit.
- Put the pages in orderUse the arrows on each picture in the list.
- Download the PDFAll the pages in one file under 500 KB.
About this tool
500 KB is where a PDF with several pages becomes practical. Three pages of documents keep about 1200 pixels of width each, and five keep about 900, which is enough to read ordinary print. A set of certificates, the pages of a form, or an application with its attachments fits in one file.
Add the pictures and they appear in a list in page order. The arrows on each picture move it earlier or later, a button removes it, and more can be added at any time. Each change rebuilds the PDF, and pages that have not changed are not processed again, so reordering is immediate.
A single page has far more room than it needs at 500 KB: a scanned sheet stays close to its full size. If your PDF is one page only and the form allows 500 KB, the result will be about as good as the picture you started with.
What you get
- Limit preset to 500 KB, and editable
- Three to five readable pages in one file
- Reordering does not reprocess the pages
- Each page's share follows its size
- A4, Letter, Legal, A5, A3 or picture-shaped pages
- Nothing is uploaded
When to use the JPG to PDF 500 KB converter
An application with its attachments
The form, an ID and two certificates as one file, where the portal takes a single PDF of up to 500 KB.
A set of certificates
Several years of mark sheets or training certificates, in date order, for an employer or an admissions office.
Multi-page agreements
The three or four pages of a signed agreement, photographed and bound into one document.
Homework and answer sheets
A few handwritten pages submitted to a learning platform that limits each upload.
What 500 KB gives each page of text
| Pages in the PDF | Share for each page | Width of a full page of text | What reads |
|---|---|---|---|
| 1 | About 500 KB | About 2380 px, close to a full scan | Everything; prints sharply |
| 2 | About 250 KB | About 1560 px | Everything; prints cleanly |
| 3 | About 166 KB | About 1220 px | Small print on a screen |
| 5 | About 100 KB | About 890 px | Ordinary print; the smallest print is soft |
| 10 | About 50 KB | About 570 px | Headings and large type |
How it works
A multi-page PDF costs very little beyond its pictures. Each page adds three small objects, an image header, a one-line drawing instruction and the page itself, and one line in the cross-reference table for each: a little under 500 bytes a page in all. Out of 500 KB, five pages lose about two and a half kilobytes to structure and the rest is picture data. The overhead is worked out exactly before the pictures are encoded, with room left for the longest numbers the file could need, so the finished file cannot overshoot.
When the list of pictures changes, only what has to be redone is redone. Adding a sixth page to five lowers every share, so all six are encoded again. Moving a page changes nothing about any picture, so the file is simply written out in the new order. On a phone, encoding a page takes a moment, and a line beside the buttons counts the pages as they are done; if you change a setting while it is working, the run in progress is dropped and a new one starts.
Common problems and how to fix them
- Ten pages are hard to read
- Ten pages get about 50 KB each, which keeps only large type clear. Send two PDFs of five pages, or ask whether the limit applies to each file.
- One busy page looks worse than the rest
- Pages get equal bytes for equal size, and a photograph or a dense table needs more of them than a plain page does. Crop that picture to what matters so that its bytes are not spent on background.
- The pages are in the wrong order
- Pages follow the list above the preview, numbered from 1. Move a picture with its arrows; the PDF is rebuilt at once.
- Adding a page made every page slightly worse
- That is the limit being shared between more pages. Remove a page you do not need, or raise the limit if the form allows it.
Frequently asked questions
How many pages can I put in a 500 KB PDF and still read them?
Up to about five pages of ordinary print. In a test, five full pages of text came out about 890 pixels wide each, which reads on a screen. Ten pages drop to about 570 pixels, where only large type is clear.
Do all the pages get the same quality?
They get the same number of bytes for each pixel they have, so pictures of the same size are treated alike. The quality each ends up with then depends on its content: a clean page compresses more easily than a busy photograph, and is saved at a higher quality for the same share.
One page matters more than the others. Can I give it more of the limit?
Not directly. A workaround is to make that page's picture larger than the rest, or the others smaller with the Image Resizer, since the limit is shared by pixel count.
Can I add pages to a PDF I already have?
No. This page builds a new PDF from pictures; it cannot open an existing one. If you still have the pictures, add them all again together with the new ones.
Is there any gain in using 500 KB for a single page?
A good deal over 200 KB: the page is stored at nearly its full pixel size. Beyond roughly 700 KB a scanned page is already at its full pixel size, and more room only raises its quality.
Are the pages compressed one by one or together?
One by one. Each picture is its own JPEG inside the PDF, fitted to its own share of the limit. Nothing is shared between pages except the total.
Can I mix photos and screenshots?
Yes. Screenshots and clean scans compress well and come out sharper than photographs for the same share of the limit.