Should I compress Bunny.Net?

When It Makes Sense

• Good fit: You run a content‑heavy website where most files are text‑based (HTML, CSS, JavaScript) and your audience experiences slow connections. Enabling GZIP or Brotli compression on Bunny.Net can noticeably reduce page load times.
• Good fit: Your origin server already serves compressed assets, but you want the CDN to handle compression for dynamic or newly added files without updating your backend pipelines.

When You Should Avoid It

• Warning sign: Your site primarily serves already compressed media such as JPEG, PNG, or video files. Additional compression offers little benefit and may waste CPU cycles on the edge server.
• Warning sign: You rely on precise byte‑range requests for very large files (e.g., streaming video) and the CDN’s compression could interfere with range handling, causing playback issues.

Pros and Cons

Pros

• Reduced bandwidth consumption, which can lower CDN costs for high‑traffic sites.
• Faster perceived page load speed for end users, especially on mobile or limited‑bandwidth connections.

Cons

• Edge servers expend additional CPU cycles to compress content on‑the‑fly, which could increase latency during peak load.
• If misconfigured, compression may interfere with caching headers or cause double‑compression, leading to corrupted responses.

Decision Checklist

• Are the majority of your assets text‑based and not already compressed at the origin?
• Do you have monitoring in place to track CDN CPU usage and latency after enabling compression?
• Have you tested critical user flows (e.g., file downloads, video streaming) to confirm no regression?

Alternatives to Consider

Instead of relying on Bunny.Net to compress on‑the‑fly, you can pre‑compress assets during your build pipeline and upload the compressed versions. This approach eliminates edge‑CPU overhead and gives you full control over compression settings. Another option is to enable selective compression only for specific MIME types through Bunny.Net’s custom rules, limiting impact to files that benefit most.

Final Recommendation

For most websites that serve mainly HTML, CSS, and JavaScript, enabling compression on Bunny.Net is a worthwhile optimization, provided you monitor performance and ensure proper cache handling. If your traffic is dominated by already‑compressed media or you have strict latency budgets, consider pre‑compressing assets or disabling compression to avoid unnecessary overhead. When in doubt, run A/B tests and consult with a performance‑engineering specialist for high‑stakes environments.