curl vs wget: When to Use Which

Design center

curl speaks many URL schemes (HTTP(S), SFTP, LDAP, etc.), exposes fine-grained TLS and HTTP/2 controls, and is the default choice for REST calls, OAuth token exchanges, and CI/CD health checks. wget optimizes for unattended file and site retrieval with built-in recursion, host-spanning rules, and conservative defaults for mirroring static sites.

Quick comparison

Need	Prefer	Why
POST JSON to an API	curl	`-d`, `-H`, HTTP verbs, `-w` timings
Mirror a static documentation tree	wget	`-r -np -k` patterns, simpler robots handling
Resume a huge ISO	Either	curl `-C -`, wget `-c`—verify server supports Range
Script portability	curl	Ships on macOS; ubiquitous in containers

Output and errors

curl defaults progress to stderr and body to stdout—ideal for pipes. wget logs linearly and creates files by default; both support quiet modes for cron jobs.

Frequently Asked Questions

Q.Which tool should I use for REST APIs?

Use curl—it maps cleanly to verbs, headers, and JSON bodies. wget can POST but the ergonomics are weaker and defaults assume file retrieval.

Q.Can wget upload files like curl?

`wget --method=PUT --body-file=` exists but is rarely idiomatic—reach for curl or HTTPie when uploads are primary.

Q.How do I follow redirects the same in both?

curl uses `-L`; wget follows redirects by default for simple downloads but still tune `--max-redirect` for safety in scripts.

Q.Which handles TLS client certificates better?

curl exposes `--cert` and `--key` with mature ALPN and HTTP/2 support—common in mTLS service meshes. wget supports client certs but feature parity varies by build.

Q.Is wget safer for crawling many pages?

wget’s spider mode and wait options reduce accidental load storms; still obey robots.txt policy and rate limits for sites you do not operate.

Q.Why does my script break on macOS with wget?

macOS does not ship GNU wget by default—curl is always present. Install wget via Homebrew if you require its recursion flags verbatim.

Q.Can curl mirror an entire site like wget?

Possible with careful flags or external tools, but wget remains the pragmatic choice for full static mirrors unless you orchestrate with a dedicated crawler.

Q.How do I pick for CI pipelines?

Prefer curl for health checks and API smoke tests; use wget when the pipeline only needs a recursive artifact mirror with simple retry semantics.

Design center

Need

Prefer

Why

POST JSON to an API

curl

`-d`, `-H`, HTTP verbs, `-w` timings

Mirror a static documentation tree

wget

`-r -np -k` patterns, simpler robots handling

Resume a huge ISO

Either

curl `-C -`, wget `-c`—verify server supports Range

Script portability