CSV Data File Storage

CSV is the lingua franca of data hand-off: the nightly export your billing system emails to finance, the "Download report" button in your SaaS dashboard, the dataset dump a data pipeline writes for downstream jobs. What these share is a need for a stable, fast download URL that a human or a script can hit on demand. files.link gives each uploaded CSV a permanent URL served from a global CDN, so a 40 MB transactions export downloads from the nearest edge instead of streaming out of your origin server and tying up a request worker.

The generation side is automation-friendly: from a cron job, a Lambda, or a pipeline step, you upload with three calls — POST /v1/files/{folderId} to mint a presigned URL, PUT the CSV bytes to it, POST /v1/files/confirm-upload with the returned id — using the raw API key as the Authorization header. A nightly export reduces to:

psql -c "\copy (SELECT * FROM invoices WHERE day = current_date) TO 'out.csv' CSV HEADER"
UP=$(curl -s -H "Authorization: $KEY" -d '{"files":[{"name":"invoices-'$(date +%F)'.csv"}]}' \
  https://api.files.link/v1/files/$FOLDER)
curl -s -X PUT --data-binary @out.csv "$(echo $UP | jq -r .urls[0].url)"
curl -s -H "Authorization: $KEY" -d '{"ids":["'$(echo $UP|jq -r .urls[0].id)'"]}' \
  https://api.files.link/v1/files/confirm-upload

Files are immutable, which is a feature for reporting: yesterday's export keeps its own URL forever, so an audit link you sent last quarter still resolves the exact data it pointed at. To "update" a report you upload a new dated version and update the reference your app shows — no risk of a cached link silently changing underneath someone. For exports containing PII or financials, keep the folder private and hand out signed URLs that expire, so a finance report isn't sitting on a guessable public link.

There's no file-size limit, so multi-gigabyte analytics dumps store and stream the same way a 2 KB lookup table does. Want correct headers and structure for sibling data formats? See XML file storage and JSON hosting.