Free tier with real monthly allowance
100 conversions/month, no card required
Convertio alternative
Looking for an alternative to Convertio?
Convertio is a polished browser-based converter with very broad format coverage and a separate developer API priced per conversion minute. Converterer is API-first: flat per-conversion pricing, webhook callbacks, your own storage as the destination, and no-code integrations for everything that should run without a browser.
At a glance
How the two services compare.
| Converterer | Convertio | |
|---|---|---|
| Pricing unit | Flat per conversion | Web plans: credits/month. API: prepaid packages at $0.10 per conversion minute |
| Free tier | 100 conversions/month, no card | Free browser widget (1 GB cap); API minutes are prepaid |
| API shape | Single POST /convert with the file and output format | POST /convert, PUT upload, poll GET /convert/:id/status |
| Authentication | HTTP Basic with your API key | API key in the JSON request body |
| SDKs | None needed: plain REST, recipes in 7 languages plus cURL | CLI tool; no official language SDKs documented |
| Job completion | Webhook callbacks | Callback URL or polling |
| Output delivery | Directly into your S3/R2/B2/GCS/Azure bucket | Download URL from the API |
| File size limits | 1 GB per file on every plan (custom plans for larger) | Web plans 1–20 GB per file by tier; API unlimited |
| Format coverage | 300+ conversion pairs | 300+ formats incl. OCR (broader long tail) |
Convertio splits a conversion across a create call, a PUT upload, and a status poll, with the API key in the JSON body. Converterer is one HTTP Basic POST /convert. Output lands in your bucket, or a webhook fires. No poll loop.
They win on the web UI, OCR, and rare format pairs. If you are embedding conversion in a product and you do not need OCR, the extra steps are overhead.
Pricing
What the same volume costs.
Convertio's web subscriptions and its developer API are priced separately. The API is prepaid at $0.10 per conversion minute, which adds up quickly at production volume; the web plans are cheaper but built around browser use.
| Monthly volume | Converterer | Convertio |
|---|---|---|
| 1,000 / month | $9.99 (Starter, includes 2,500) | API rate: ~$100 in prepaid minutes. Web plan: Lite $11.99/mo |
| 10,000 / month | $29.99 (Growth) | API rate: ~$1,000 in prepaid minutes. Web plan: Pro $44.99/mo |
| 50,000 / month | $99.99 (Scale) | API rate: ~$5,000 in prepaid minutes. Web plan: custom, from $54/mo |
Convertio figures from convertio.co/pricing and developers.convertio.co/api/pricing as of June 2026, assuming 1 conversion ≈ 1 credit/minute and the published $0.10/minute API rate before any volume discounts. Check their pricing pages for current numbers. Converterer overage: $0.003–0.03 per extra conversion depending on plan (Volume tier: $249.99/month for 250,000).
Source: Convertio official pricing · Last verified: 23 July 2026
What Converterer brings
Features worth comparing.
Direct REST API
POST a file, get a task id, fetch result from your storage
SDK-free integration
Code recipes in 7 languages plus cURL, no SDK install
Webhook callbacks
Get notified when a job finishes, no polling
No-code workflows
Zapier, Make, n8n, Power Automate, Workato
Both file conversion and website-to-PDF
Two APIs under one account
Bring your own storage
S3, Cloudflare R2, B2, GCS, Azure Blob, files land directly in your bucket
Transparent pricing
Public per-month plans from $9.99, no quotes, cancel anytime
Migration
Moving an integration across.
Convertio's API passes the key in the JSON body and splits a conversion across a create call, an upload, and a status poll. On Converterer that becomes one HTTP Basic multipart request, and instead of polling you can take a webhook and read the output from your own bucket.
# Convertio: POST /convert (apikey in body) → PUT upload → poll status → download # Converterer: one request, then a webhook (or fetch from your bucket) curl -u "$CONVERTERER_API_KEY:" \ https://api.converterer.com/convert \ -F input=@photo.heic \ -F output_format=jpg # → {"id":"9f1a8e7c-…", "status":"queued"} - result lands in your storage
Honest take
When Convertio is the better fit.
- You convert manually in the browser: Convertio's web UX is excellent, and the annual web plans are cheap for a person clicking through files.
- You need OCR as part of conversion.
- You need a rare format pair: Convertio advertises 300+ formats and tens of thousands of conversion combinations.
- You like prepaid API credit that never expires rather than a monthly subscription.
Next steps
Try it before you commit.
No card. 100 free conversions per month is enough to validate against your real workload.
Comparing other providers? CloudConvert · ConvertAPI · FreeConvert · Zamzar
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Get into the API docs, grab a code recipe in your language, or wire up a no-code workflow. The free tier is enough to test against your real files.