PDF guides: solve common file problems
Find the problem you want to solve, read the direct answer and open the matching tool. You can also go straight to the tools without reading a guide.
Why your PDF is not getting smaller: compression modes explained
Choose between structural optimization and image compression, understand target-size limits, and check text, links and legibility before submitting a PDF.
Read guide ↗Cannot edit the original text in a PDF? Text, scans and Word conversion
Learn which PDF text blocks can be replaced, why scans need OCR, and how editable-text and page-image DOCX conversion differ.
Read guide ↗Are online PDF tools safe? What local processing actually means
Understand browser-local file processing, resource downloads, optional analytics and device risks before working with private documents.
Read guide ↗How to combine photos and PNGs into one PDF, up to 100 images
Combine JPG, PNG, WebP and HEIC images in a single PDF. Set order, page size and margins, and understand the 100-file and 100 MB batch limits.
Read guide ↗How to extract only the PDF pages you need, in the right order
Select PDF page thumbnails or enter ranges such as 1,3,5-8. Understand page positions, custom order and the difference between extraction and separate-file splitting.
Read guide ↗PDF merge order wrong or a file will not open? A practical checklist
Merge PDFs in list order, check mixed page sizes, protected inputs and failed jobs, and verify the saved document before submitting attachments.
Read guide ↗HEIC will not open or a website only accepts JPG? What to do
Convert iPhone HEIC and HEIF photos to JPG locally. Understand ZIP batches, metadata loss, HDR differences and unsupported image formats.
Read guide ↗Why PDF to Word changes the layout or leaves text uneditable
Choose editable text reconstruction or page-image appearance, identify scanned PDFs that need OCR, and check tables, fonts and reading order after conversion.
Read guide ↗PDF asks for a password? Encryption, decryption and signatures explained
Understand opening passwords and permission restrictions, remove supported protection with the correct password, and distinguish encryption from visible handwriting.
Read guide ↗How these guides are maintained
CAPYPDF writes these guides from the actual tools and their limits. They explain decisions rather than promise target sizes, OCR or perfect conversion. Keep originals and check output before submitting. Report unclear instructions at Capypdf.tw@gmail.com