What is a good alternative to Smallpdf for filling forms?
Smallpdf, iLovePDF and Acrobat online all upload your file, process it on their servers and delete it on a timer. FormworkPDF does the same filling, signing, flattening and shrinking in your browser, with no upload, no account and no retention window — and fewer tools overall.
Free, no sign-up, nothing uploaded.
The architectural difference, stated fairly
Smallpdf, iLovePDF, Adobe’s online tools, pdfFiller, Sejda and DocFly are all built the same way: your browser uploads the document, a server does the work, and you download the result. Their privacy statements describe how long the copy is kept — Smallpdf says files are removed one hour after processing, iLovePDF says uploads are deleted within two hours.
Those are reasonable policies from reputable companies, and this page is not an accusation. It is a statement about what is possible: any promise about a copy is a promise about handling, retention, access and jurisdiction, and every one of those is a thing that can fail. A tool that makes no copy has none of them to fail.
| Upload-based tools | FormworkPDF | |
|---|---|---|
| Where the file is processed | Their servers | Your browser tab |
| Retention window | Stated in hours | None — nothing is sent |
| Account required | Usually, beyond a free tier | No |
| Export limits | Usually on the free tier | None |
| Works offline | No | Yes, once installed |
| Breadth of tools | Large suites | Filling, signing, pages, flatten, shrink |
| Forms with no fields | Manual text boxes, or a conversion step | Detected and scored |
Where they are better, honestly
A comparison page that finds no advantage on the other side is an advert. These are real:
- Format conversion. PDF to Word, Excel and PowerPoint and back, with OCR into editable text. FormworkPDF does not convert anything.
- Breadth. Merge, split, rotate, watermark, protect, unlock, compare, redact, and a dozen more, in one place.
- Teams and storage. Shared folders, request-a-signature flows, audit trails, integrations with Drive and Dropbox.
- Certificate signatures. Cryptographically sealed signing with an identity behind it, which a drawn signature image is not.
- Longevity. Established companies with support desks.
If your problem is “convert this deck to PowerPoint” or “get six colleagues to sign in sequence”, use them.
Where this is different
Forms nobody made fillable. The reason this exists. A scan or a print-out has no fields, and the usual answer is to drag text boxes into place one at a time. Here the page is read and the blanks are found — rules, dotted leaders and boxed cells — then treated exactly like real fields, with a tab order, validation and autofill.
Numbers instead of adjectives. Detection is scored against 41 published forms: 86% of fields on pure geometry with no download, 93% and 96% on trained detectors of 37 MB and 97 MB. Tick boxes go from 52% to 100% across the same three tiers. The picker shows you that table before each scan, including the false-positive counts, because 96% recall with 44 false positives is not obviously better than 93% with 28. How that is scored explains the answer key and why no form was flattened to manufacture one.
No retention window, because no transfer. Open the developer tools and watch. Filling, signing and exporting generate no request carrying your document. There is exactly one optional network call in the whole product: the detector weights, fetched once and cached, carrying no document and no identifier.
No account. Nothing to sign up for, nothing to cancel, no export counter.
Try it against a form you would not upload
The honest test of a claim like this one is the document you hesitated over. Open the tax form, the medical intake sheet or the contract that made you close the tab on an upload page, and watch the network panel while you fill it in.
If it is a scan, ask it to find the blanks. If the result is too big for the portal, shrink it. Then export, flattened, rebuilt from the bytes you opened.
Questions people actually ask
- Is Smallpdf unsafe?
- No. It encrypts in transit and states that files are removed from its servers one hour after processing. The distinction here is architectural, not a criticism of its handling: a copy that is never made cannot be exposed, however good the handling is.
- What does Smallpdf do that FormworkPDF does not?
- A great deal. Conversion between PDF and Office formats, OCR to editable documents, merging and splitting across many files, team accounts, storage and integrations. If you need a full document suite, it is the better product.
- Is FormworkPDF really free?
- Yes, with no account and no export limit. There is no server bill to fund, which is most of why.
- Can I use it on a work laptop with a locked-down browser?
- It is a web page, so if the browser opens websites it runs. Nothing is installed unless you choose to install it as an app, and no file leaves the machine — which is usually the part that matters to an IT policy.
- Does it work on my phone?
- Yes, and signing with a finger is better on a phone than on a trackpad. Very large scans are limited by the device's memory rather than by any quota.