Convert any file,
in seconds.
33 format pairs. Sub-10-second jobs. A clean HTTP API. Three free every day — no signup.
33 formats supported
Loved by individuals shipping daily — our
conversion pipeline handles documents,
audio, video, images and more.
Why bulkconvert
Everything you need to
convert at scale.
Speed up your conversions
Process files seamlessly in real-time, with optimized throughput. Most jobs complete in a single poll — under 10 seconds end-to-end.
Browser-side privacy
Images, CSV and Markdown convert entirely in your browser — zero network roundtrip. Heavier formats stream straight to our processor.
One HTTP endpoint
POST a source URL, get a signed download. Bearer auth, inline usage meter, /v1 versioning. No SDK, no webhooks, no callbacks.
Try it now.
No signup. Drop a file, pick a format, get the result.
33
Format pairs
5–10s
Avg conversion
5 GB
Max file (API)
EU
Data residency
Built for engineers who hate webhooks.
One synchronous endpoint. Bearer auth. Send a public URL, get a signed download. 10,000 conversions a month on the API plan.
- Synchronous — request blocks until ready
- Inline usage object on every response
- Failures don’t count against your quota
- Versioned at /v1 with 12-month deprecation
curl -X POST https://bulkconvert.io/api/v1/convert \
-H "Authorization: Bearer bc_live_xxxxxxxxxxxxxxxxxxxxxxxxxx" \
-H "Content-Type: application/json" \
-d '{
"source_url": "https://example.com/report.pdf",
"to": "docx"
}'
# → 200 OK
# {
# "ok": true,
# "download_url": "https://www.bulkconvert.io/api/v1/files/9e2f...e1ab",
# "filename": "report.docx",
# "size": 184320,
# "tier": "api",
# "usage": { "used": 385, "quota": 10000, "remaining": 9615 }
# }33 pairs. Six categories.
Each pair has its own dedicated converter page.
Documents
11Audio
6Images
6Stay free until you outgrow free.
Subscription plans, cancel any time.
Questions, answered.
Do I need an account to convert a file?
No. Drop a file, pick a target format, and we’ll convert it. The free tier gives you 3 conversions per day per IP, with no signup.
What happens to my files after conversion?
The signed download URL expires in 24 hours. After that the file is permanently deleted from our conversion infrastructure. We never read or persist your file contents.
How accurate is the API usage metering?
Every successful /api/v1/convert call increments your monthly counter atomically; failures roll the counter back so you’re never billed for an attempt that produced nothing.
What’s the difference between Bulk and API plans?
Bulk is unlimited conversions through the web UI, up to 1 GB per file. API includes 10,000 conversions/month through /api/v1/convert with a Bearer token, up to 5 GB per file.
Can I add a conversion pair that’s not listed?
Most common format pairs can be added in under an hour. Email support and we’ll add it to the catalog.
Convert your first file in under 10 seconds.
No account, no card, no waiting. Three free a day.