Certificate format
CRT Sample Files
CRT (.crt) files represent certificate containers used by trust stores. Use sample CRT files to validate import logic, metadata parsing, and certificate-chain processing.
6 files
All to 1MB
SHA256 verified
Manifest included
Quick facts
Files first
CRT Sample Files — Download
| Filename | Size | MIME | Download |
|---|---|---|---|
| 1.4 KB | application/x-x509-ca-cert |
Download
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| 1.0 MB | application/x-x509-ca-cert |
Download
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| 200.0 KB | application/x-x509-ca-cert |
Download
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| 500.0 KB | application/x-x509-ca-cert |
Download
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| 50.0 KB | application/x-x509-ca-cert |
Download
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| 1.5 KB | application/x-x509-ca-cert |
Download
|
No files match the current filter. Switch to another chip or size range.
Use cases
CRT Testing Workflows
Use the file table first, then branch into compare or FAQ only if the task needs more context.
Compare and decide
CRT Format Comparisons
FAQ and reference
CRT File FAQ
Checksum Verification
Use checksums to confirm file integrity after download.
shasum -a 256 your_file_name_here
# Compare output with SHA256 values listed above.Where is the machine-readable manifest?
Use the manifest when you need stable names, SHA256 values, and URLs for automation.
Use in code — curl, Python, Node, wget
Copy any snippet directly into scripts, test suites, or CI pipelines. All URLs are stable and publicly accessible with no auth required.
# Download crt_intermediate_ca_sample.crt
curl -L -o crt_intermediate_ca_sample.crt \
https://samplefile.com/samples/download/certificate/crt/crt_intermediate_ca_sample.crt/
# Or fetch a random CRT file
curl -s "https://samplefile.com/samples/api/random?format=crt" | jq -r '.download_url'# Download crt_intermediate_ca_sample.crt
wget -O crt_intermediate_ca_sample.crt \
https://samplefile.com/samples/download/certificate/crt/crt_intermediate_ca_sample.crt/import requests
# Download a specific file
url = "https://samplefile.com/samples/download/certificate/crt/crt_intermediate_ca_sample.crt/"
resp = requests.get(url)
with open("crt_intermediate_ca_sample.crt", "wb") as f:
f.write(resp.content)
# Or fetch a random CRT file via API
meta = requests.get("https://samplefile.com/samples/api/random?format=crt").json()
resp = requests.get(meta["download_url"])
with open(meta["name"], "wb") as f:
f.write(resp.content)// Download a specific file
const fs = require("fs");
const https = require("https");
const url = "https://samplefile.com/samples/download/certificate/crt/crt_intermediate_ca_sample.crt/";
https.get(url, (res) => {
res.pipe(fs.createWriteStream("crt_intermediate_ca_sample.crt"));
});
// Or fetch a random CRT via the API
const meta = await fetch("https://samplefile.com/samples/api/random?format=crt").then(r => r.json());
const file = await fetch(meta.download_url);
// use file.arrayBuffer(), file.body, etc.# Random CRT file (JSON response)
GET https://samplefile.com/samples/api/random?format=crt
# All CRT files
GET https://samplefile.com/samples/api/files?format=crt
# Manifest with SHA256 checksums
GET https://samplefile.com/samples/certificate/crt/manifest.json
# Response includes: name, size_bytes, mime_type, sha256, download_urlValidation Methodology
- Validate certificate chains, key handling, and parser behavior before any deployment use.
- Test encrypted versus unencrypted private-key handling in your loaders.
- Confirm trust-store import logic and CSR metadata inspection paths.
Workflow Packs