PDFWix for Developers
Skip the desktop UI — automate every PDFWix tool from your codebase with a single REST endpoint and an API key.
Why use this
- One REST endpoint for every PDFWix tool — merge, compress, sign, redact, protect, convert.
- Generous free tier (250 ops/month, 10 MB max file) covers prototypes without a sales call.
- Single API-key header authentication — no OAuth dance for server-to-server calls.
- OpenAPI spec, sandbox keys and predictable usage-based pricing.
- Same engine as the web app, with consistent output across both.
Tools compared
- HTML to PDF — render invoices and reports from server-side templates
- Compress PDF — cron-job over an S3 bucket of user uploads
- Watermark — stamp every nightly export with a build ID
- Sign PDF — embed signature flows in your product
- Repair PDF — fallback for ingest validation failures
Frequently asked questions
How is the developer API priced?
Usage-based with a 250-ops/month free tier. Paid plans scale linearly with no per-feature gating. See /developers for current rates and the OpenAPI spec.
What's the file-size limit on the API?
10 MB on the free tier, scales up on paid plans. Hard cap is 500 MB per request — split larger files client-side and merge after processing.
Can I self-host the engine?
Not currently. Every tool is a hosted endpoint with predictable latency. Self-hosting is on the roadmap for enterprise customers — contact support@pdfwix.com to discuss.