JPG to PDF Under 1MB
Converting images to a PDF is easy — but getting that PDF to land under 1MB is where most people get stuck. Job application portals, visa form systems, and government platforms routinely enforce a strict 1MB PDF limit. This tool solves the problem automatically: it converts your JPG or PNG images to a PDF, then uses a binary search algorithm to find the highest image quality that keeps the total PDF under 1MB. No manual compression, no quality guessing, no uploads to a server.
Quick Answer
Converting images to a PDF is easy — but getting that PDF to land under 1MB is where most people get stuck. Job application portals, visa form systems, and government platforms routinely enforce a strict 1MB PDF limit.
Try it now — free, no signup
Your images stay on your device. Nothing is uploaded to any server.
Step-by-Step Guide
3 steps · takes under 1 minute
Upload your images
Drop one or more JPG, PNG, or WebP images. Each becomes a page in the final PDF.
Auto-optimise to under 1MB
The tool runs up to 8 iterations of binary search on JPEG quality — building the PDF, checking the size, adjusting compression — until the output is under 1MB.
Download your PDF
A green tick confirms the PDF is under 1MB. If multiple high-resolution images make 1MB impossible, an amber warning shows the smallest achievable size.
100% Private — Zero Uploads
ImgToolkit runs entirely in your browser using the Canvas API. Your images are never sent to a server, never stored in the cloud, and never seen by anyone else. This makes it safe for sensitive documents, client work, medical imagery, and confidential screenshots.
Pro tip
All processing happens in your browser using WebAssembly and the Canvas API. No files are sent to any server — your images stay completely private.
Format & File Size Comparison
Same 1080×1080px photo processed four ways
| Format | Quality | File Size | Notes |
|---|---|---|---|
| PNG (original) | Perfect | 4.2 MB | No compression — too large for web |
| Compressed PNG | Visually identical | 1.1 MB | −74% — transparency preserved |
| JPG (85% quality) | Excellent | 310 KB | −93% · Best for photos |
| WebP (85%)BEST | Excellent | 205 KB | −95% · Recommended for web |
Based on a 1080×1080px photo. Results vary by image content and complexity.
Related Free Tools
All tools run in your browser — no account or upload needed
Frequently Asked Questions
5 questions answered
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Free, instant — your files stay on your device. Always.
Convert images to PDF under 1MB free