All tools / Help & usage guide

Using Telsaro

Find your tool, then focus on your file.

What can I do today?

22 PDF tools support processing and downloads, including compression, merging, splitting, page organization, image conversion, text and shapes, page numbers, watermarks, forms and passwords.

Are my files uploaded?

PDF parsing, previews, processing and export run in your browser. Fonts and processing engines load from this site without sending your documents. Results stay in the current tab’s memory and become unavailable after a reload or close, so download them first.

What are the PDF tool limitations?

Compression keeps text and vectors but may reduce image quality; an arbitrary target size is not guaranteed. Editing adds content rather than modifying existing text. Embedded Chinese fonts may increase file size. Cropping hides content without deleting it. Redaction rebuilds every page as an image and removes searchable text, forms, links, and attachments. Signatures are visual additions, not certificate signatures. Unlocking requires the known password, repair only attempts to rebuild readable structures, Markdown export does not include OCR, and comparison produces a visual page report.

Structural operations such as splitting and merging reject documents whose forms, signatures, or complex relationships cannot be preserved reliably. Check your exported result before replacing an original.

Do I need an account?

The PDF tools currently available do not require an account.

Image and PDF limits

PDF tools accept up to 20 files, 200 pages and 128 MiB per task, with a 50 MiB limit per PDF. Image-to-PDF accepts static JPG, PNG and WebP images, up to 20 MiB and 16 megapixels each, with 32 megapixels per task. Previews and rendering also have pixel budgets; split larger tasks.