JPG to PDF Under 100KB

How to convert JPG to PDF under 100 KB

100 KB is the tightest limit most forms use, so it’s meant for a single page: one certificate, one ID side, one signed letter. For a JPG to PDF 100 KB file, add the photo here; it’s converted and sized in one step.

1. Add one photo (or one per document if you need several files).
2. Accept the suggested crop around the paper, or adjust it.
3. Convert. The page is made black and white if you allow it, and sized to fit under 100 KB.
4. Read the preview at full zoom before you download.

Conversion is unlimited; the size target uses a compression step that counts towards Unlimited on the Free plan.

The 100 KB recipe, in order

Three changes do almost all the work. The order matters, because each one makes the next one cheaper:

1. Crop to the paper. Everything outside the document is wasted space. On a typical phone photo of a card, the card itself may fill only part of the picture.
2. Remove colour from printed pages. A black-and-white page stores far less information than a colour one, and printed text can look crisper without the colour noise.
3. Size for the screen. The image is scaled to a width that reads well on a monitor, not the full camera resolution.

Only if the file is still above 100 KB is the image quality lowered, and only as far as needed.

Will your document fit in 100 KB?

Take a photo that compresses well

Small files start with the photo itself. These habits make 100 KB much easier and keep the text sharp:

• Fill the frame with the document by moving closer, rather than zooming.
• Use a plain, dark background so the paper’s edges are easy to find and crop.
• Turn off the flash and use daylight or a bright room; flash leaves a glare patch that hides text.
• Hold the phone parallel to the page so letters aren’t stretched at one end.
• Tap the text to focus before taking the picture, and keep still.

Badly lit or blurry photos can be cleaned up with Scan to PDF, but a good photo always ends up clearer at the same size.

Several documents? Make several files

When a portal has separate fields for, say, an ID, a certificate and a photo, each one usually has its own limit. Add all the photos and ask for “one PDF per photo, each under 100 KB”: you get separate files, named after your photos, in one download. If you already have the documents as PDFs, use Compress PDF to 100 KB instead.

Ask in plain words

• “Make this photo of my ID a PDF under 100 KB.”
• “Three photos, three separate PDFs, each under 100 KB.”
• “Keep the coloured seal but get it under 100 KB.”

If 100 KB can’t be reached

Some photos can’t get to 100 KB and stay readable, usually dark or detailed ones, or several pages in one file. ToolsMotive stops before the text blurs, shows the smallest readable size it reached and suggests the next step: a better photo, black and white, or separate files. It never labels a file “under 100 KB” when it isn’t.

Other sizes and related tools