# Image to PDF under a size limit

> Turn JPG, PNG or HEIC photos into one PDF under 100 KB, 200 KB, 500 KB or 1 MB. Picks the best quality that fits and says so if it cannot. No upload.

URL: https://tools.cuelark.com/image-to-pdf-under-size
Publisher: Cuelark Team (https://cuelark.com)
Updated: 2026-11-10
Price: free, no sign-up
Privacy: runs in the browser; files are not uploaded

Drop photos or scans, set the limit the upload form gives, and get one PDF at or under it, with every page still readable. The page tries sizes and qualities in your browser and tells you plainly when a limit cannot be reached.

## How to use it

1. Pick the limit: 100 KB, 200 KB, 300 KB, 500 KB, 1 MB, or type a custom size. Choose A4, Letter or the image's own size for the pages.
2. Drop the images and put them in order. Turn on Grayscale for scanned documents to fit more pages.
3. Press Make PDF, check the exact byte count, and download.

## Details

- **Target:** At or under the limit in bytes (1 KB = 1,000 bytes, so it also passes a 1,024-byte check)
- **Input:** JPG, PNG, WebP, AVIF, HEIC, GIF, BMP. One page per image, in your order
- **Method:** Every image is re-encoded as JPEG; long side from 2480 px (A4 at 300 DPI) down to 600 px, quality 90 down to 35
- **Pages:** A4 or Letter with a 10 mm margin, image fitted without cropping; or each page the size of its image
- **If it cannot fit:** You get the smallest readable version and its size, with a clear note, instead of an unreadable file

## Questions

### Are my files uploaded?

No. The page loads its code once, then reads and processes your files inside the browser tab. Nothing is sent to a server; you can confirm it in your browser's network panel while a file converts.

### How many pages fit in 100 KB?

It depends on the content. A clean scan of a typed page in grayscale often fits in 30–60 KB, so two or three pages can fit in 100 KB; colour photos take more. The page tells you if the limit cannot be reached.

### Why not just make the images tiny?

Because the PDF has to stay readable. The smallest setting keeps the long side at 600 pixels; below that, small text in scans becomes unreadable, which gets an application rejected just as surely as a big file.

### Does 200 KB mean 200,000 or 204,800 bytes?

The page aims at or under 200,000 bytes, so the file also passes a form that counts 1 KB as 1,024 bytes. The exact byte count is shown.

### Can I combine this PDF with an existing PDF?

Yes. Download it, then use Merge PDF to join it with other PDFs. Merging copies pages unchanged, so the size is close to the sum of the files.

## Related tools

- [Merge PDF](https://tools.cuelark.com/merge-pdf)
- [Compress image to 100 KB](https://tools.cuelark.com/compress-image-to-100kb)
- [Convert Letter PDF to A4](https://tools.cuelark.com/letter-to-a4)
- [HEIC to JPG](https://tools.cuelark.com/heic-to-jpg)