One small PDF from your photos
Upload forms often want a single PDF under 100 KB, but what you actually have is a couple of phone photos of a certificate, or the front and back of an ID card. Converting them the usual way gives a PDF of several megabytes. This page opens JPG to PDF with “Keep the PDF under a file size” switched on and set to 100 KB. The images are shared out a budget by their size, each is saved as a compressed JPG at the best quality its share allows, and the PDF is checked and re-made if it ends up over the limit. Nothing leaves your device.
Updated September 2026
How to convert JPG to PDF under 100KB
- 1Select your photos or scans; each becomes one page.
- 2Put them in order with the up and down arrows.
- 3Choose page size, orientation and margin; the size limit is already set to 100 KB.
- 4Press Convert, wait for the progress message, then download the PDF.
Photographing documents for a small PDF
- Lay the paper flat on a dark, plain surface and shoot straight from above.
- Use daylight or bright room light and avoid your own shadow on the page.
- Fill the frame with the page; crop off the rest afterwards if needed.
- Hold the phone steady or rest your elbows on the table to avoid blur.
How the 100 KB budget is shared
The tool first sets aside a small allowance for the PDF's own structure, then splits the rest between your images in proportion to their pixel area. A large photo gets a bigger share than a small one. Each image is compressed to its share with the same quality-then-size search our image compressor uses. If the finished PDF is still over the limit, all shares are reduced and the PDF is built again, up to three times.
Page size and margins
A4 or Letter pages make the PDF print nicely, with each photo fitted inside the margins. “Same as image” makes every page exactly the size of its photo, which looks best on screen. The page size doesn't change the file size much; the images are what count.
Phone first
This is designed for the common case of documents photographed on a phone: pick the photos from your gallery, convert, and the PDF lands in your Downloads or Files, ready for the upload form in the same browser.
Features
- One-step photos-to-PDF with a 100 KB limit
- Fair size budget for every page
- Automatic retry if the finished PDF is slightly too big
- A4, Letter or same-as-image pages
- Reorder and remove pages before converting
- Private: runs entirely in your browser
Frequently asked questions
How many photos can go into a 100 KB PDF?
Two to four document photos usually stay readable. Each page gets roughly its share of the 100 KB, so ten photos would get about 9 KB each, which is too little for most documents. Upload only what the form asks for.
Can I make an ID card front and back into one PDF under 100 KB?
Yes, that is a perfect fit. Crop each photo to the card with Crop Image first so no table or background is wasted, then add both here. The card will be clearly readable.
Why is this better than converting and then compressing?
Here the photos are shrunk before they go into the PDF, and each keeps the best quality its share of the limit allows. Compressing an existing PDF has to redraw pages that were already made, which usually looks a little worse.
What if the PDF can't fit under 100 KB?
You get the smallest PDF the tool could make and a message saying so. Remove a page, crop the photos tighter, or check whether the form accepts a bigger file.
Does it work with PNG screenshots?
Yes. With a size limit, every picture, whether PNG, WebP or JPG, is re-saved as a compressed JPG inside the PDF.
Can I change the limit?
Yes. Type any number in the Maximum size box, such as 200 or 500, or untick the option to keep full quality with no limit.