Every guide below walks through one job from start to finish: which format to pick, how to run the conversion in the browser, what to check in the result and how to fix it when something looks wrong. All tools are free, work without registration and add no watermark.
转换为 PDF
How to Convert JPG to PDF
Turn one photo or a whole folder of JPG images into a single PDF, with control over page size, orientation and margins.
Read the guide →How to Convert PNG to PDF
Turn screenshots, diagrams and logos into a single PDF — including what to expect from transparent backgrounds.
Read the guide →How to Convert BMP to PDF
Turn bulky BMP bitmaps — old scans, Paint exports, legacy screenshots — into a compact, shareable PDF.
Read the guide →How to Convert TIFF to PDF
Turn TIFF and TIF scans — including multi-page archive files — into a PDF that opens on any device.
Read the guide →How to Convert Word to PDF
Freeze a DOC or DOCX exactly as you laid it out, so a CV, contract or report looks the same on every screen and printer.
Read the guide →How to Convert PowerPoint to PDF
Turn a PPTX deck into a PDF that keeps its fonts and layout, opens anywhere and prints as clean handouts.
Read the guide →How to Convert TXT to PDF
Turn plain text — logs, notes, exports, manuscripts — into a paginated PDF that prints and shares cleanly.
Read the guide →How to Convert Excel to PDF
Send a spreadsheet as a fixed, readable report — formatting kept, formulas hidden, no accidental edits.
Read the guide →从 PDF 转换
How to Convert PDF to JPG
Turn PDF pages into JPG pictures you can post, paste into a chat or embed on a website.
Read the guide →How to Convert PDF to PNG
Render PDF pages as lossless PNG images — the right choice when text, tables and diagrams must stay sharp.
Read the guide →How to Convert PDF to BMP
Export PDF pages as uncompressed BMP bitmaps for legacy software and imaging systems that require them.
Read the guide →How to Convert PDF to TIFF
Export PDF pages as lossless TIFF images for archives, document management systems and professional printing.
Read the guide →How to Convert PDF to Word
Get an editable Word document out of a PDF — with realistic expectations about layout, tables and scans.
Read the guide →How to Convert PDF to DOCX
Produce a modern DOCX file from a PDF and edit it in Word, Google Docs or LibreOffice — no software installed.
Read the guide →How to Convert PDF to PowerPoint
Turn PDF pages back into editable PPTX slides you can restyle, reorder and actually present from.
Read the guide →How to Convert PDF to TXT
Pull the raw text out of a PDF for search, analysis, translation or reuse — no formatting in the way.
Read the guide →How to Pack PDF Files Into a ZIP Archive
Collect a set of PDF documents into one ZIP archive so they travel as a single attachment.
Read the guide →合并和编辑
How to Merge PDF Files
Combine several PDFs into one document in exactly the order you want — contracts with annexes, scans in sequence.
Read the guide →How to Rotate PDF Pages
Fix sideways scans and upside-down pages — rotate one page or the whole document and save it permanently.
Read the guide →How to Delete Pages From a PDF
Remove blank scans, duplicates and pages that should not be shared, then download the trimmed document.
Read the guide →How to Reorder Pages in a PDF
Drag pages into the right order — fix reversed scans, misplaced annexes and pages that ended up in the wrong place.
Read the guide →优化和提取
How to Compress a PDF
Get a document under the attachment limit while keeping text sharp — and understand what actually makes PDFs heavy.
Read the guide →How to Convert a PDF to Grayscale
Turn a colour document into clean grayscale — smaller files, cheaper printing, no colour distractions.
Read the guide →How to Split a PDF
Pull out exactly the pages you need — one form page, a chapter, an annex — as a separate document.
Read the guide →How to Repair a Damaged PDF
Recover a document that refuses to open after a failed download, a full disk or a crashed program.
Read the guide →PDF 安全
How to Password Protect a PDF
Encrypt a document so only someone with the password can open it — and send the password properly.
Read the guide →How to Remove a Password From a PDF
Take the password off a document you own, so it opens normally and works with every other tool.
Read the guide →所有的PDF工具
How to Use All the PDF Tools in One Place
An overview of every tool on the site and how to chain them together for the jobs that need more than one step.
Read the guide →