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The best PDFfiller alternative in 2026

Free PDFfiller alternative for filling and signing PDF forms online. No subscription required — fill AcroForms, add signatures and download instantly.

The best PDFfiller alternative in 2026

Free PDFfiller alternative for filling and signing PDF forms online. No subscription required — fill AcroForms, add signatures and download instantly.

PDFWix vs PDF Filler — overview

PDF Filler is a popular paid PDF tool. PDF Filler is a US-focused, e-sign-heavy PDF platform priced at $8/month (Basic) to $20/month (Premium) per user as of May 2026. PDFWix takes a different approach: 100% free for the web app, no daily cap, no watermark, with most processing running inside your browser via WebAssembly so files never reach our servers.

Key differences

What PDF Filler does well: deep form-filling and e-sign workflow with templates, audit trail, signature requests, US tax-form library, and CRM integrations (Salesforce, HubSpot, Zapier).

Where PDF Filler falls short: expensive for casual users; constant upsell prompts inside the workflow on the free trial; signup required before downloading even a free conversion; performance has been sluggish on long PDFs in 2026 reviews.

Where PDFWix wins: free with no daily cap, no signup wall before download, no watermark, browser-side processing on most tools, works on every device including Chromebooks and locked-down work laptops with no admin install.

When to use which

Use PDF Filler when your workflow is form-heavy and you need built-in templates, e-sign requests and CRM integrations. Use PDFWix for everyday merge/split/compress/sign/edit work where free + private + no install matters more than feature breadth.

Verdict

PDF Filler is a real e-sign platform, not just a PDF tool — worth the subscription if e-signature is the core of your workflow. PDFWix is free for the editing and signing operations themselves but doesn't include the audit trail or send-for-signature workflow. For most users PDFWix covers the job at $0; for sales teams sending dozens of contracts per week PDF Filler earns its price.

Why use this

• You just need to fill one form, this once: PDFfiller's pricing assumes you're a recurring user. PDFWix's Fill PDF Form is free for one-off jobs — drop the form, fill the fields, sign if needed, download. No card, no trial, no daily cap.
• You want browser-side privacy on personal forms: PDFfiller uploads every form to its servers and stores them in your account. PDFWix runs Fill PDF Form entirely in your browser tab — your tax form, medical history, or insurance claim never leaves…
• You don't need legally-binding e-signatures: If you just need to type your name in a signature field and email the PDF back (the common case), PDFWix's Sign PDF does exactly that — for free. PDFfiller's audit-trail e-signature is overkill (and…
• You want to avoid the airSlate upsell funnel: Since the airSlate acquisition, PDFfiller's UX heavily promotes the broader airSlate Business Cloud — automation builders, document workflows, integrations. If you only want to fill a PDF, the…

Frequently asked questions

Can PDFWix replace PDF Filler entirely?

Not if you depend on send-for-signature workflows with multi-party routing and audit trails. PDFWix handles single-signer and self-sign flows for free; PDF Filler adds the multi-party routing and compliance trail.

Does PDF Filler have a real free tier?

Free trial only — beyond that, downloading a filled PDF requires a paid subscription. PDFWix's web app is free permanently, no trial.

Are PDF Filler signatures legally binding?

Yes — they meet ESIGN/eIDAS for simple electronic signatures, same as PDFWix's Sign PDF tool.