JPG to PDF Under 100KB

Government and college portals often say “upload the document in PDF format, maximum 100 KB”. Most people have the document as a phone photo of 2 to 4 MB, so the usual route is three websites: one to convert, one to compress, and one more when the first compressor stops at 140 KB. This page does both steps together. It builds the PDF from your photos, then lowers the image resolution and JPEG quality step by step until the file fits under 100 KB.

A single A4 page of printed text fits under 100 KB comfortably and stays readable. Two or three pages usually fit too, with softer images. Five or more photographed pages are hard to squeeze into 100 KB without the text becoming blurry, because the cap is shared by every page. If the result says it is still above the limit, check whether the form allows separate uploads for each document, or ask whether a black-and-white scan is acceptable, which is far smaller than a colour photo.

The photo itself matters more than the settings. Shoot the page flat, from straight above, in daylight, and fill the frame with the paper instead of the table. Crop dark edges away in your phone’s gallery before adding the photo. Shadows and a wooden table behind the page cost kilobytes that would be better spent on the text.

For other caps, change the limit in the box: under 50 KB for the strictest forms, or 200 KB, 300 KB, 500 KB and 1 MB when the portal is more generous. If you already have a PDF rather than photos, skip this step and use Compress PDF to 100 KB. For the NEET and JEE document uploads, which want a PDF between 50 and 300 KB, the exam photo resizer lists the exact rules from the official bulletins.

A photo and a PDF go into different boxes. If the form asks for your photograph or signature as a JPG, do not convert it to PDF; fit it with Resize Photo instead. If the form wants several certificates as one PDF, add all of the photos here in the order the checklist names, or merge existing PDFs with Merge PDF and then compress the result.

Both steps run in this browser tab. The photos are placed into a PDF with pdf-lib, then the images inside are re-encoded on your device to reach the size limit, with a final structural pass by qpdf compiled to WebAssembly. Nothing is uploaded, there is no sign-up and the PDF has no watermark.

Squeezing to 100 KB is lossy. Photos lose fine detail and colour gradients first, and very small print can become hard to read at the strictest settings. The tool reports the final size and warns when it cannot reach the limit, so you never download a file that is secretly too large. Keep your original photos; if the result is too blurry, try with fewer pages per PDF or a tighter crop.