Filestack offers an end-to-end file upload, transform, and delivery API — featureful, but priced for enterprise customers with per-upload, per-transform, and per-stored-file dimensions. swiftimg is leaner: image and GIF hosting, on-the-fly resize, signed URLs, and global delivery for a flat plan.
swiftimg vs Filestack at a glance
| Feature | swiftimg | Filestack |
|---|---|---|
| Focus | Image / GIF hosting + CDN | General file pipeline + AI |
| Pricing model | Flat plan + overage | Per-upload + per-transform + storage |
| Entry paid plan | $3/mo (Pro) | Contact sales |
| On-the-fly resize / format | Yes (signed) | Yes |
| Free, no-account uploads | Yes | No |
| Custom domain (white-label) | From $9/mo | Higher tiers |
List prices as of 2026 for context — directional, not apples-to-apples. Check each provider for current pricing.
When Filestack is the better choice
Filestack if you need a full file pipeline including PDF/document handling, sophisticated workflows, OCR, and virus scanning beyond images.
swiftimg vs Filestack — FAQ
Is swiftimg a drop-in Filestack replacement?
For image and GIF hosting with transforms, yes. If you rely on Filestack's PDF/document handling or AI tagging, those aren't in scope for swiftimg.
What's the rough cost difference?
Filestack's plans start in the low hundreds per month; swiftimg's Developer plan ($9/mo) covers the API, transforms, signed URLs, and a custom domain.
Can I migrate existing uploads?
Yes — fetch each file from its Filestack URL and POST it to /v1/images. A short migration script handles the rewrite.
Switching from Filestack?
Image hosting for WordPress
Host WordPress media on swiftimg to cut origin load, serve automatic WebP, and get on-the-fly resizing without an enterprise CDN bill.
Image hosting for Next.js
Use swiftimg as the remote image source for next/image. Permanent URLs, automatic WebP, on-the-fly resize via the loader, and flat, predictable pricing.
Image hosting for AI agents (MCP)
Give Claude, Cursor, or any MCP client a tool to upload images and get a permanent URL. Connect by URL (zero install) or via npx. The image host for AI agents.
A free image hosting API: upload & embed images programmatically
How to upload, host, and embed images from code with a free image hosting API — one POST request, automatic WebP variants, and ready-to-use URLs.
Upload images from your terminal, scripts & ShareX
Three friction-free ways to upload and share images from your desktop: a zero-dependency CLI, a one-line curl helper, and a ShareX custom uploader — all on the swiftimg API.
Weigh it up before you migrate: swiftimg pricing and plan limits next to Filestack, and the image hosting API documentation covering uploads, transforms and signed URLs.
Ready to switch from Filestack?
Start free, then unlock the full API, transforms, signed URLs, and a custom domain on the Developer plan.