Start with the finished file in mind
Before you touch a tool, picture what the recipient will open. A good work, school or official PDF is complete, in the right order, readable on a phone screen, and small enough to send. Most rejections and resend requests come from a missing page, a crooked scan or a file that bounces because it is too large, not from a fancy feature.
Use this quick check before you send anything: every required page is included, the pages read in order, every scan is straight and legible, the file name says what it is, and the file size fits the way you will send it. If you send by email, remember the common attachment limits: Gmail 25MB, Outlook.com 25MB, Yahoo 25MB and iCloud 20MB.
For jobs: one complete application pack
Employers and recruiters prefer a single file over five loose attachments. Put the CV first, then certificates, then ID or supporting documents, so the reader meets your strongest page first and never has to guess what is missing. Name the file clearly, for example with your name and the role, and check the total size before you attach it.
Our detailed job guide walks through the order, the size check and the file name step by step. See How to Merge a CV, Certificates and ID into One PDF for a Job Application.
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Open Merge PDF →For school: readable work, in order
For assignments and coursework, readability matters more than design. Photograph or scan each page flat and in order, rebuild the pages into one PDF, and check that handwriting, diagrams and page numbers are legible before you submit. If only some pages come out crooked, fix those pages first rather than rotating the whole document and making the good pages worse.
If your work starts as phone photos, follow the clean-up workflow in How to Make a Scanned Document Look Clean and Professional. It covers straightening scans, rebuilding photos into one tidy PDF and merging parts in the right order.
For government and official forms: complete and checkable
Official submissions are judged on completeness. Read the recipient instructions first: which pages are required, whether copies of ID or certificates must be included, and whether a specific format is asked for. Then build one complete file in the order the form asks for, and keep an identical copy for yourself before you send it.
Two honest limits matter here. First, password-protected PDFs must be unlocked in the application that created them before any PaperKit tool can work with them; no PaperKit tool bypasses a password. Second, if a submission asks for a specific archival format, read the archiving guide below before you assume an ordinary PDF will do.
The four guides in this playbook
- How to Merge a CV, Certificates and ID into One PDF for a Job Application — the right order, size checks and file naming for a job application pack.
- How to Make a Scanned Document Look Clean and Professional — straighten crooked scans and rebuild photos into one clean, professional PDF.
- How to Sign and Send Documents When You Only Have a Phone — photograph, merge and mark documents on a phone, and what to do when a real signature is required.
- PDF/A and Long-Term Archiving: What It Is and When You Need It — what the archival PDF format is, who actually needs it, and what to do instead for now.
A simple workflow that covers most jobs
- Gather every required page and put them in the order the recipient expects.
- Straighten any crooked scans and rebuild phone photos into one clean PDF.
- Merge the parts into a single file, then add page numbers if the document is long.
- Check the size against the email limit, compress or split if needed, and keep a copy.
What PaperKit does not do
PaperKit is honest about its limits, and knowing them saves a wasted trip. Merge joins whole files only: it has no per-file page selection and no reorder feature, so extract the pages you need first with Split PDF and add files in the order you want them. Add Page Numbers stamps every page, with no skip-first-page option. Watermark is text only, up to 50 characters, diagonal, with three opacity levels. PaperKit has no e-signature tool and does not create PDF/A files today, and both guides above say plainly what to do instead.
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Open JPG to PDF →Free, no account needed, and your files are processed in your browser — never uploaded.
Open Compress PDF →