PDF Guides
Practical guides for the PDF jobs people actually struggle with: files too big to email, documents to merge for a job application, watermarks before sharing, and keeping private files private. Every guide ends at a free tool that runs in your browser — your files are never uploaded.
- How to Reduce PDF Size for EmailLearn how to reduce PDF size for email: Gmail's 25 MB limit, why big PDFs bounce, and four free fixes you can do in your browser.
- Are Free Online PDF Tools Safe? What Actually Happens to Your FileAre free online PDF tools safe? Learn what happens when you upload a PDF, the risks for private documents, and how browser-based tools differ.
- How to Merge Multiple PDFs into One File (Without Uploading Them)Learn how to merge multiple PDFs into one file for free in your browser — no upload, no account, and your documents stay private on your device.
- How to Turn Phone Photos of Documents into One Clean PDFTurn phone photos of documents into one clean PDF: photo tips, page order, A4 or fit-to-page options, and a free tool that needs no app or upload.
- How to Merge a CV, Certificates and ID into One PDF for a Job ApplicationMerge your CV, certificates and ID into one PDF for a job application: the right order, size checks, file naming, and a free private merge tool.
- How to Add a Watermark to a PDF Before Sharing It PubliclyAdd a watermark to a PDF before sharing it: what makes a good watermark, step-by-step instructions, and what watermarking can and cannot protect.
- The Complete Guide to Organising PDF Pages: Merge, Split, Rotate, Number and Clean UpOrganise PDF pages with free browser tools: merge files, split chapters, rotate scans, add page numbers and delete unwanted pages, no upload needed.
- How to Extract Only the Pages You Need from a PDFLearn how to extract the pages you need from a PDF: use the free Split PDF tool to save selected page ranges as a new file, keeping the original intact.
- How to Split a Large PDF into Separate Chapters or FilesLearn how to split a large PDF into separate chapters or files by page range, free in your browser, with no upload, no account and no loss of quality.
- How to Delete Blank or Unwanted Pages from a PDFLearn how to delete blank or unwanted pages from a PDF: find the blank pages in your reader, select them in the free tool, and download a clean file.
- How to Rotate a Scanned PDF and Save It PermanentlyLearn how to rotate a scanned PDF and save it permanently: rotate all pages, download a new file, and fix mixed-orientation scans step by step.
- How to Add Page Numbers to a PDF (And Where They Should Go)Learn how to add page numbers to a PDF and where they should go: placement choices, the Start at first-number option, and the cover-page workaround.
- How to Rearrange a PDF Before Sending It: A 5-Minute Cleanup ChecklistRearrange a PDF before sending it with this 5-minute cleanup checklist: split into parts, merge in order, delete unwanted pages, and check the file.
- PDF to Image Conversion: Formats, Quality and Print — The Full GuidePDF to image conversion explained: formats, quality, DPI and print sharpness, plus how to turn PDF pages into JPGs and photos into PDFs in your browser.
- JPG vs PNG vs PDF: Which Format Should You Send?JPG vs PNG vs PDF explained: which format suits photos, graphics and documents, when to send each, and how to combine JPG and PNG images into one PDF.
- How to Convert PDF Pages to JPG Images for Sharing or SlidesLearn how to convert PDF pages to JPG images in your browser: every page becomes a JPG in one ZIP download at fixed quality, for slides or sharing.
- PDF or JPG for Printing: Which Gives Sharper Results?PDF or JPG for printing? Learn which gives sharper prints, why sharpness depends on the source file, and when to keep the PDF instead of converting it.
- Why Does My PDF Look Blurry as a JPG? DPI Explained SimplyWhy does a PDF look blurry as a JPG? Learn how DPI works in plain words, why low-resolution sources stay blurry, and what conversion can and cannot fix.
- How to Combine Scanned Pages into a Single PDF DocumentLearn how to combine scanned pages into a single PDF: photograph or scan each page, turn images into PDFs, merge them in order, and check the document.
- How to Send PDF Files Anywhere: Email Limits, Sharing and FixesLearn how to send PDF files anywhere: email attachment limits for Gmail, Outlook, Yahoo and iCloud, plus fixes when a PDF is too big to send for free.
- The Best Way to Send a Large PDF When Email Says 'File Too Big'Email says your PDF is too big? Learn the best way to send a large PDF: compress it first, split it into parts, or share a link instead, step by step.
- Why Is My PDF So Big? 5 Causes and the Fix for EachWhy is my PDF so large? Learn the five common causes of a big PDF file and the fix for each, from images and fonts to extra pages before you send it.
- How to Split a PDF by File Size So Each Part Fits an EmailLearn how to split a PDF by file size so each part fits an email: estimate pages per part, split by page ranges, and check each part in your browser.
- How to Prepare a PDF Application Pack: Order, Numbers and WatermarkLearn how to prepare a PDF application pack: merge documents in order, add page numbers, and add a short text watermark before sending for free.
- Are Online PDF Tools Safe? How Browser-Based Processing Keeps Files on Your DeviceAre online PDF tools safe? See how browser-based processing keeps files on your device, what to check before trusting a tool, and how to share safely.
- How to Mark a PDF as Draft or Confidential with a WatermarkLearn how to mark a PDF as draft or confidential with a text watermark: the best marking words, opacity choices, and what a watermark cannot protect.
- What to Do When a PDF Is Password-Protected and Won't Open or EditA password-protected PDF will not open or edit until it is unlocked. Learn the two password types, how to unlock a file safely, and what to do next.
- Browser-Based vs Upload-Based PDF Tools: An Honest ComparisonBrowser-based vs upload-based PDF tools compared: where your files go, privacy, speed, device limits, and which type suits confidential documents best.
- PDFs for Jobs, School and Government Forms: A Practical PlaybookA practical playbook for PDFs at work, school and government offices: merge packs, clean scans, mark drafts and archive records in your browser.
- How to Make a Scanned Document Look Clean and ProfessionalLearn how to clean up a scanned PDF: straighten crooked pages, rebuild phone photos into one tidy PDF and merge parts in order, all in your browser.
- How to Sign and Send Documents When You Only Have a PhoneManage PDFs on a phone: photograph pages into one PDF, merge and mark documents before sending. PaperKit has no e-signature tool, so learn the limits.
- PDF/A and Long-Term Archiving: What It Is and When You Need ItWhat is PDF/A? A plain guide to the archival PDF format, who needs it for long-term records, and what to do now, since PaperKit does not make PDF/A.