If you want to reduce the size of responses from a website you operate, you can compress them at your web server, use a managed CDN to compress them at the edge, or optimize images separately. These options address website delivery; they are not drop-in replacements for a personal forward proxy that compresses all of your web browsing.
First, identify which kind of proxy you mean
A website owner can control compression for responses served by their own site. The compression can happen at the origin server or at a CDN edge, which sits between the origin and visitors. Image transformations can also reduce bandwidth, but only for images.
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A personal forward proxy is different: it relays a user’s general browsing traffic. A Reddit discussion titled Been thinking about compressing my own web traffic through a self-hosted server as a middle-man. Solutions? illustrates that use case, but the available product documentation does not establish a current, supported catalogue of consumer browsing-compression alternatives. The options below are for website operators.
Compare the website options
| Option | Where compression happens | Who operates it | Best suited to |
|---|---|---|---|
| Managed CDN compression | At the provider’s edge | CDN provider, with site configuration | Sites already using a CDN that want the edge to handle text-response compression |
| Web-server compression | At the origin server | Site owner or administrator | Operators who control their web-server configuration |
| Image optimization | In an image-delivery or transformation workflow | Site owner and, where used, image service | Sites where image size is the specific delivery problem |
| Shared-dictionary compression | At a proxy or an application server with support | Site owner or service operator | Specialized delivery of changed, versioned assets to compatible returning browsers |
These approaches are not interchangeable, and the available documentation does not establish a universal performance or cost winner.
#1 Best Overall
Use a managed CDN for edge compression
Cloudflare
Cloudflare documents Brotli and Gzip compression for text-based assets at its edge. Compression Rules can tailor behavior by file type and content type. The relevant DNS record must be proxied through Cloudflare for a rule to apply. Cloudflare lists the feature on Free, Pro, Business, and Enterprise plans; rule limits vary by plan and may change, so check the current Compression Rules documentation before relying on a particular limit.
Edge compression can be a practical choice if your site already uses Cloudflare and you prefer not to operate that part of delivery on the origin. It does not remove the need to account for caching and response transformations; those details are covered below.
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Fastly
Fastly documents edge compression using GZip and Brotli. With static compression, Fastly takes uncompressed content from the origin, compresses it, and caches the resulting object for compatible requests. Its dynamic-compression path is for content that cannot be cached. See Fastly’s compression documentation for the service behavior and configuration details.
Rank #2
Fastly distinguishes text suitable for compression from already-compressed media. Many image, audio, and video formats are already compressed, so applying generic GZip or Brotli to them is not a useful default.
Keep compression on your own web server
NGINX
NGINX documents response compression with the gzip on; directive. Its documented default MIME type is text/html; add other types you intend to compress rather than assuming every response is covered. Requests NGINX considers proxied may also require separate gzip_proxied configuration. Consult the NGINX gzip module guide for directive details.
NGINX warns that runtime compression adds processing overhead and can negatively affect performance. After enabling it, check response headers for representative URLs and watch CPU load under normal traffic; a configuration directive alone does not prove that every intended response is compressed.
Apache HTTP Server
Apache HTTP Server provides the mod_brotli module. Its documentation explains that the module adds Vary: Accept-Encoding, helping caches distinguish compressed and uncompressed response variants. Review the Apache mod_brotli documentation when configuring the module.
Origin compression leaves configuration and operation with the site owner. The cited server documentation does not provide a direct performance comparison between NGINX and Apache, so choose based on your existing stack and validate behavior in your own deployment.
Optimize images when images are the problem
Image optimization is complementary to response compression, not a substitute for compressing HTML, CSS, JavaScript, or other text responses. Cloudflare Images documents resizing images on the fly and converting them to WebP or AVIF for browsers that support those formats, with fallback for others. Its image transformation guide describes transformations through URL parameters or Workers.
Rank #4
Cloudflare also describes Polish as a way to compress existing images. See its Polish documentation. These image-specific workflows are worth considering when images account for the delivery weight you want to address; they do not provide general web-response proxy compression.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Consider shared dictionaries only for a specialized case
Shared-dictionary compression can encode a new version of an asset as a delta against a dictionary already available in a returning browser. Cloudflare’s shared-dictionary compression guide says to fall back to ordinary Brotli, Zstandard, or Gzip when a browser does not advertise the required dictionary support or the dictionary hash does not match. Implementation options include a reverse proxy or native application-server support.
This is a specialized path for versioned assets, not a replacement for baseline compression. It makes sense to investigate only when your delivery setup and target browsers can use the advertised dictionary support.
Check negotiation, caching, and transformations
Honor encoding negotiation
Clients advertise supported compression methods in Accept-Encoding. A server or edge service needs to select a compatible representation, and caches must distinguish variants when responses differ by encoding. Apache’s Vary: Accept-Encoding behavior is one documented example of signaling that distinction. Cloudflare’s content-compression documentation explains its compression behavior and related considerations.
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Cloudflare explains that enabled features which change a response can require it to decompress and recompress content. If a response should not undergo those transformations, its documentation describes using Cache-Control: no-transform. Confirm the consequences for the features and caching rules actually enabled on your site before applying that directive.
Measure the deployment, not a promised percentage
The right outcome depends on your response types, cacheability, traffic, server capacity, and configuration. No directly comparable benchmark establishes a universal saving or speed improvement for these alternatives. Check representative responses, confirm the expected encoding and variation headers, and monitor origin CPU if compression runs there.
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