PDF processing, with clear limits
PDF tools
One workspace for everyday PDF processing. Choose a tool, review its limits, and sign in when you are ready to process a file.
Sign in to open the toolboxPage management
Split PDF
Split by ranges, fixed page counts or individual pages. Multiple files are packaged as ZIP.
Free processingExtract pages
Extract one or more pages into a new PDF in the order you enter.
Free processingMerge PDFs
Merge files in the selected order.
Free processingReorder pages
Enter each page number once to reorder the entire document.
Free processingDelete pages
Delete selected pages, keeping at least one page.
Free processingRotate pages
Rotate selected pages in multiples of 90 degrees.
Free processingInsert blank page
Insert a blank page at the specified position.
Free processingDuplicate pages
Copy selected pages to the specified position.
Free processingLayout and annotations
Crop pages
Adjust the visible area. Cropping does not permanently delete hidden content.
Free processingResize paper
Fit content proportionally to the paper size with margins on all sides.
Free processingMultiple pages per sheet
Place 2 or 4 pages on one sheet, from left to right and top to bottom.
Free processingAdd watermark
Add a text watermark to selected pages.
Free processingPage numbers, headers and footers
Add page numbers at the specified position, with an optional prefix.
Free processingAnnotations and markup
Add notes, highlights or rectangles, or remove all annotations.
Free processingFill PDF forms
Fill standard AcroForm text, choices or checkboxes. XFA is not supported.
Free processingHandwritten signature
Place handwritten strokes in a rectangle on the selected page. This is a visible signature, not a certificate-based digital signature.
Free processingSecurity
Encrypt PDF
Create a new file protected with AES-256 encryption and an opening password.
Free processingRemove password
Requires the correct original PDF password. Password cracking is not provided.
Free processingPermanent redaction
Permanently remove text, images and graphics inside the specified rectangle in a new file.
Free processingScrub document
Remove scripts, actions, attachments, annotations, links and metadata. This is not a security certification.
Free processingPermanent erase
Permanently remove text, images and graphics inside a rectangle and leave it white. Backgrounds and obscured content are not reconstructed.
Free processingOptimization and cleanup
Compress and optimize
Remove redundant objects and compress losslessly. The file size may not decrease.
Free processingDocument information
Edit or remove metadata such as title and author.
Free processingManage bookmarks
Replace or remove bookmarks, using levels, titles and page numbers.
Free processingFlatten forms and annotations
Keep the visible appearance and remove form and annotation interactions. XFA is not supported.
Free processingManage attachments
List, extract or remove embedded attachments. Attachments are never executed.
Free processingRewrite and repair
Rewrite damaged PDFs that can still be parsed. Unreadable files will still fail.
Free processingCompress scanned PDF
Rasterize selected pages and compress them as JPEG. Selectable text, vectors and interactions are lost; file size may not decrease.
Free processingConversion
PDF to images
Render selected pages as PNG/JPEG. Multiple images are packaged as ZIP.
Free processingImages to PDF
Combine PNG/JPEG images into a PDF in file order.
Free processingExtract text
Export selectable text to TXT. OCR is not included.
Free processingExtract embedded images
Extract original embedded images, which differ from page screenshots.
Free processingGrayscale and rasterize
Create a grayscale raster PDF. Selectable text, vectors and form interactions are lost.
Free processingPDF to Word
Export editable text and embedded images with page breaks. Complex layouts and tables need adjustment; run OCR on scanned pages first.
Free processingPDF to PowerPoint
Create one slide per page. Editable text and images may change the layout; page-image mode preserves the appearance.
Free processingPDF to long image
Join selected pages in the entered order into one PNG/JPEG at a uniform width. Oversized images are rejected.
Free processingOCR scanned PDF
Recognize English, Simplified Chinese or Traditional Chinese offline, up to 20 pages. Get 5 free pages daily; additional pages cost 1 translation credit per 5 pages, rounded up.
5 free pages per account dailyCost, limits and your files
OCR includes 5 free pages per account per Beijing calendar day. For each task, extra pages cost 1 credit per 5 pages, rounded up. Review the quote before starting; failed tasks release held credits and free-page allowance. Other document tools are free within their limits. Model-based translation has its own quote and requires explicit confirmation. No platform watermark is added unless you request one.
Processing requires a verified phone account. Files and downloads remain account-scoped; this public guide contains no user files. The toolbox accepts up to 20 inputs, with a combined limit of 100 MiB and up to 500 source pages. Individual tools have tighter output, pixel and time limits. Passwords are used only to process authorized encrypted files.
Frequently asked questions
Is PDF translation free?
Ordinary document tools are free within their limits. Translation uses model resources and shows a server quote before you confirm credit usage.
Can I process files without signing in?
You can read these guides without an account. Processing and downloading your files require a verified phone account.
Can every PDF be converted perfectly?
No. Encrypted, malformed, very large or complex files may fail or need review. Each tool explains its output and limitations.