Our take: Its twist is compressing to a target size (say, under 1 MB). Default settings cut our PDF by 70% with an intact result, but free use is capped.
- ✓ Compress and download without sign-up — verified
- ✓ Compress to a target size
- ! Limited free tasks
- ! Uploads to cloud storage
- ? China access — not tested yet
Our test
Tested 28 Sep 2026 · Chrome desktop · 3-page PDF with a 3000×2000 photo, 2,876,218 bytes
How we checked privacy: the file was uploaded to cloud storage run by LightPDF’s operator (Apowersoft group), compressed as a server task, and the result came from lightpdfhk.aoscdn.com. The download was a valid PDF with all 3 pages. The page also sends usage analytics to a Hong Kong region endpoint.
Data sheet
Every row shows how we know it
| Price | Free use plus paid Pro Tested + official |
|---|---|
| Sign-up | Not needed to compress/download Tested |
| Free limit | Server response showed a 3-task limit Tested |
| Modes | Compression level or target size in MB Tested |
| Output quality | Valid PDF, all 3 pages kept Tested |
| File handling | Uploaded to cloud storage, processed on server Tested |
| Access from China | — Not tested |
When to use it
When a portal demands “under 2 MB”, type the target size and hit it in one go.
Before you use it
Free tasks are capped and files go to overseas cloud storage, so it is not for sensitive documents or bulk work.
How to use it
- Upload a PDF at lightpdf.com/compress-pdf
- Choose a level or a target size in MB
- Press Compress, then Download Files
Alternatives
- PDF24 — no usage cap, smaller resultUploads to server
- iLovePDF — many PDF tools in one placeUploads to server
Guide: How to merge PDFs: compare free tools and upload requirements
Last verified 28 Sep 2026 · Found something outdated? Tell us. · LightPDF pricing