Contact us

Questions, suggestions, something broken — tell us directly

By email

The fastest route is email: manqiong_com@163.com. We usually reply within one to three working days.

What to include

  • Which tool page you were on (PDF compression, image compression, ID parsing, a counter…);
  • Browser and version, plus operating system (for example Chrome 129 on Windows 11);
  • The target size you set and the message the page showed;
  • Rough details of the file: format, size, page count or pixel dimensions.

Please do not send us the original file. For privacy reasons we do not accept or store users' PDFs or images. If a problem needs reproducing, generate a similar file from public material, or just describe its characteristics.

Frequently asked

Q: Compression finished but did not reach my target size. What now?

A: First check that the target is not unrealistically small — squeezing a 40-page scanned PDF into 50KB is physically out of reach. The page says so explicitly and gives you the smallest file it could produce, which you can download as-is.

Q: Can you add a new tool?

A: Requests are welcome. Describe the use case and the input and output you expect, and we will work out whether it can be done entirely in the browser.

Q: Too many ads, or something inappropriate appeared?

A: Send a screenshot and the page URL and we will block that category with the ad network. You can also choose "not now" in the ad prompt so no ad script loads.

Business enquiries

For sponsorship, put "partnership" in the subject line and describe the product and the format you have in mind. We do not accept gambling promotions, health claims, or anything that pushes a download.