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Convert CURL to Fetch/Axios. Free online tool, no login, no sign-up.

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Usage Guide & Tech FAQ

Usage Guide

  1. Paste your `curl` request (multi-line supported).
  2. Choose a target: `fetch`/`axios`/`python`/`go`/`rust`.
  3. Verify URL, headers and body match the original request.
  4. If it fails, check -X/-H/-d formatting first.
  5. For complex curls, validate URL/method first, then add headers and body incrementally.
  6. `--data-binary @file` or `@filename` cannot read your disk from the browser—inline `-d` text instead.
  7. `--compressed` may require explicit decompression in generated client code.
  8. Multiple cookies/`-b` flags may need merging differently per target HTTP library.
  9. Redact OAuth/Bearer tokens before sharing generated snippets.
  10. Smoke-test the generated code in the target runtime; TLS/HTTP/2 behavior may differ from curl.
  11. Read the title and description first to confirm this utility matches your task (avoid using the wrong tool and misinterpreting output).
  12. Paste or type input in the editor; if a sample/template is provided, load it first to learn the expected output shape.

Related Tech Knowledge

  • Method & URL are inferred from `-X/--request` and the first `http(s)` URL.
  • Headers are parsed from `-H/--header` into key/value pairs (split by colon).
  • Body supports `-d/--data*` and auto-distinguishes JSON vs plain text.
  • All parsing and generation happen locally in your browser.
  • Shell quoting/backslashes matter; chat apps may replace ASCII quotes with smart quotes.
  • Duplicate header names can be valid in HTTP; verify whether your target library merges or overwrites.
  • `-G` with `--data` builds a query string instead of a POST body.
  • Preserve or re-encode `%` sequences in URLs according to your language’s HTTP client rules.
  • Some curl options (`--resolve`, `--cacert`) may not map 1:1 to every language and need manual follow-up.
  • This tool performs syntactic translation—it does not validate server acceptance of the payload.
  • Core parsing and computation run in your browser; by default your raw business payload is not persisted to this site’s servers (see on-page privacy notes).
  • The pipeline is typically: read input → parse (lexical/syntactic/structured) → transform → render; failures aim to be diagnosable.