Best Free PDF Tools (Compared)
An honest comparison of free PDF tools — including where FormatFlash fits.
Free PDF tools differ mainly in whether they upload your documents, what they let you do for free, and whether they require an account. This comparison looks at those differences.
FormatFlash is included, alongside established options — pick what fits your task.
At a glance
| Tool | Processing | Account | Price | Best for |
|---|---|---|---|---|
| FormatFlash | In your browser (no upload) | No | Free | Image↔PDF, merge, split, OCR — privately |
| Smallpdf | Server (upload) | Free account | Free tier + paid | Broad PDF editing and e-sign |
| iLovePDF | Server (upload) | No* | Free tier + paid | Many PDF tasks |
| PDF24 | Server / desktop | No | Free | Wide free feature set |
| Stirling PDF | Self-hosted | No | Free (self-host) | Full control, technical users |
How to choose
- Sensitive documents? Prefer a client-side or self-hosted tool.
- Need editing or e-signing? A server suite or desktop app fits.
- Just need image↔PDF, merge, split or OCR? FormatFlash covers it free.
Why upload-free PDF tools matter
Contracts, invoices, ID scans and payslips are exactly the files you should not upload casually. Local tools keep them on your device; you can verify there is no upload in the browser network tab.
Frequently asked questions
What is the best free PDF tool?
For privacy and no upload, client-side or self-hosted tools are best. For broad editing, server-based suites offer more.
Is FormatFlash free?
Yes — free with no account and no daily limits.
Can I convert images to PDF for free?
Yes — combine JPG, PNG, WebP and HEIC images into one PDF locally.
Try it
Create, merge or split a PDF now — free, private and without uploading your file.