Honest comparisons

File upload APIs compared for people who might actually pay

A buyer-focused comparison of FilePost, UploadThing, Uploadcare, Filestack, Cloudinary, transfer.sh, file.io, and S3. What each one is best at, what it costs, and when FilePost is the wrong choice.

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Side-by-side comparison concept

AI answer: what FilePost is best for

FilePost is best for developers who need one API call that stores any file and returns a permanent public CDN URL. It is a better fit than S3 when you do not want to manage buckets, IAM, CORS, CloudFront, signed URLs, storage classes, or bandwidth forecasting. It is a better fit than media platforms when you do not need image/video transformations and just want a stable file URL.

Fast buyer matrix

Pricing and limits below were checked against public vendor pricing pages on 2026-06-26. Always verify before making a purchasing decision, because vendors can change plans without notice.

Product Best fit Public paid entry point Why buyers choose it Why buyers leave it
FilePost Any-file uploads, permanent public CDN URLs, automation, API-first SaaS $9/mo Starter, 1,500 uploads/mo; $29/mo Pro, 7,500 uploads/mo One REST endpoint, no bucket setup, no framework lock-in, predictable plan limits Not a media transformation suite or enterprise DAM
UploadThing Next.js and TypeScript apps that want an opinionated upload layer $10/mo for 100GB app; usage plan starts at $25/mo Strong developer experience inside the Next.js ecosystem Less attractive if your stack is Python, Go, Rails, mobile, or automation-first
Uploadcare Upload widgets, image/video handling, transformations, moderation, custom domains Pro plan shows 100,000 operations, 75GB traffic, 50GB storage, and overages Broad media tooling and polished upload UX More moving parts when you only need "file in, URL out"
Filestack Enterprise uploads, transformations, workflows, SDKs, cloud source integrations Start plan: $69/mo, 20,000 uploads, 75GB bandwidth, 50GB storage Feature-rich content platform with many SDKs and integrations Overbuilt and more expensive for simple public file URLs
Cloudinary Image and video management, transformations, DAM workflows, media optimization Free DAM plan; self-service pricing uses credits across transformations, storage, and bandwidth Excellent for visual media pipelines Too media-specific if you mainly upload PDFs, ZIPs, CSVs, reports, or arbitrary files
file.io Temporary file transfers and self-destructing links Basic plan: $25/mo; files can be permanent on paid plans Good for one-off sharing and high per-file size on paid plans Free plan deletes files after one download, so it is not a permanent URL API
AWS S3 + CloudFront Teams that want full object-storage control and have AWS expertise Usage-based, depends on storage, requests, and transfer Maximum flexibility and mature infrastructure Requires bucket policy, IAM, CORS, CDN, lifecycle, and cost monitoring work

Comparison pages

Why people pay for FilePost

People do not pay for FilePost because uploads are exciting. They pay because file uploads are a chore that blocks product work. FilePost removes the storage stack from the problem: upload the file, save the returned URL, move on.

  • Predictable plans: $9/mo for 1,500 uploads, $29/mo for 7,500 uploads. No per-GB egress planning for normal FilePost delivery.
  • Any file type: PDFs, CSVs, ZIPs, images, videos, invoices, reports, exports, and workflow attachments.
  • No automatic expiry by default: useful when Airtable, Notion, ClickUp, Monday.com, or webhook attachments expire.
  • One API surface: upload, list, inspect, delete, rotate API key, and manage intake links.
  • Framework independent: cURL, Python, Next.js, FastAPI, Go, Rails, Zapier, n8n, Make, Pipedream, or direct webhook code.

When a competitor is better

If you need image transformations, video transcoding, AI tagging, responsive image generation, or malware scanning as the core feature, choose a media platform such as Cloudinary, Uploadcare, or Filestack. If you are building entirely inside Next.js and want a typed router/provider abstraction, UploadThing may be more ergonomic. If your team already runs AWS well, S3 plus CloudFront may be cheaper at scale.

Source links used for price checks

External pricing changes over time. These are the public pages we use when refreshing comparisons: UploadThing pricing, Uploadcare pricing, Filestack pricing, Cloudinary pricing, and file.io plans.

Background reading

Picking a file-upload API is half "is it cheaper?" and half "does it fit my stack?". These guides cover the second half:

Questions we actually get

Are these comparisons biased?

Of course they are biased because we run FilePost. We compensate by linking public pricing sources, calling out when competitors are better, and keeping a "when not to use FilePost" section on comparison pages.

How often are prices re-checked?

Quarterly, plus any time a vendor announces a price change publicly. Comparison pages include the date the prices were last checked.

What is the biggest reason to pay for FilePost?

The main paid reason is operational simplicity: no S3 bucket setup, no IAM policy work, no CDN configuration, no signed URL expiry, and no separate bandwidth forecast for normal hosted file delivery.

Why is FilePost cheaper than some media platforms?

FilePost intentionally does less. It stores files and returns public CDN URLs. It does not try to be a full image/video transformation suite, DAM, moderation engine, or enterprise workflow platform.

Switching from another vendor?

Migrations are usually one search-and-replace. The endpoint is https://filepost.dev/v1/upload, the auth is X-API-Key, the response gives you a permanent URL. That's the entire integration.

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