Search 'PDF tools' and you'll see suites with 50 features, half of which you'll never touch. The genuine essentials fit on a postcard. Here's what's worth keeping in your toolkit.
The essential four
**Edit PDF: add text, images, shapes to any PDF, fillable or not. Covers form-filling, annotation, minor corrections. Sign PDF: drawn or typed signatures, drag to position, save. Compress PDF: shrink for email or storage. Convert PDF**: between PDF and Word, JPG, and other formats. With these four, 90% of personal PDF work is done. Everything else is occasional.
The occasional four
**Merge PDF and Split PDF: combine application files; extract specific pages. Password-protect and Unlock PDF**: for sensitive sharing and recovering your own locked files. Useful when you need them, fine to look up rather than memorise. Bookmark Flint's homepage; the labels make every tool findable in two seconds.
What you don't need
Bulk-batch processing, prepress tools, PDF programming, complex form scripting, document classification AI. Specialist features for specialist users. If you're filling a school form or signing a contract, none of it matters. Don't pay for what you won't use. Free tools cover the essentials completely; pay only when you genuinely run into a specific limit.
FAQ
Is one tool really enough?
Yes — Flint has each of these in one place, free for normal use. You're not maintaining a toolbox; you're using one website. Recipients can't tell which tool produced your PDF.
What about mobile?
All the essentials work in mobile browsers. For frequent on-the-go signing, the website is enough; no app needed unless you sign daily.
What if I outgrow free tools?
Heavy professional use is where paid tiers make sense. Until then, free is genuinely complete for everyday tasks. Most people never outgrow free.
Four tools cover almost everything. Edit, sign, compress, convert — bookmark Flint and you're set.