JPG to PDF under 40 KB

Turn your photos or scanned pages into a single PDF that fits 40 KB — the image-to-PDF and compress steps in one.

Drop images here or choose filesTap to choose images

🔒 Processed on your device — never uploaded · Free · No sign-up

Page size Margin Quality

Max PDF size KB

Key facts

Combines images into one PDF, then compresses it to fit 40 KB automatically.
Counts 1 KB as 1000 bytes, so the file passes either convention.
Works with JPG, PNG, WebP and iPhone HEIC photos; rotation is fixed automatically.
Runs in your browser — your documents are never uploaded.

Forms that ask for small PDFs such as one-page certificates or ID proof — a very common limit on application portals.

Each page is…	Size per page	Pages that fit	Realistic?
Photo of a text document, grayscale	15–60 KB	0–2	⚠️ Only a page or two, at reduced quality
Photo of a certificate or ID in colour	40–120 KB	0–1	⚠️ One page at most, at reduced quality
Ordinary photo (people, places)	80–250 KB	under 1	❌ Unlikely — even one page needs heavy quality loss

Estimates for cropped A4/Letter pages at readable quality. The tool always tells you whether it reached 40 KB.

Crop each photo to the paper's edges before adding it — background wastes bytes.
Choose “Small file” quality for text documents.
Only include the pages the form asks for; every page shares the same 40 KB.

Can I convert JPG to PDF under 40 KB for free?

Yes — free, no sign-up and no watermark. Add your images, keep 40 KB as the limit and download.

What if it can't reach the size?

You'll see a message. Use fewer pages, crop the photos or choose “Small file” quality and try again.

Is my photo uploaded anywhere?

No. The image is resized inside your browser and never leaves your device — important for ID photos and signatures.

Last updated 2026-10-19