Make ZIP files smaller with ZIP Shrinker
ZIP Shrinker is a new browser tool designed to reduce the size of ZIP files and other formats that use ZIP compression. It works by re-compressing files with a more efficient algorithm, removing metadata, and eliminating directory entries. The tool aims to help users save bandwidth and storage costs while maintaining compatibility with existing ZIP files.
- ▪ZIP Shrinker can compress various file formats, including APK, EPUB, and JAR.
- ▪The tool utilizes libdeflate for better performance in re-compressing ZIP files.
- ▪It removes unnecessary metadata and directory entries to achieve smaller file sizes.
Hacker News (Newest) files mainly under programming. We currently carry 5,306 of its stories.
Story provenance
Source · retrieval · rights · ranking — open for full record
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | Evanhahn |
| Canonical URL | https://evanhahn.com/make-zip-files-smaller-with-zip-shrinker/ |
| Publication time | Sun, 17 May 2026 00:26:04 +0000 |
| Retrieval time | 2026-05-17T00:40:19.088Z |
| Last seen | 2026-05-17T00:40:19.088Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | sgvPMxOYkG1a |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Make ZIP files smaller with ZIP Shrinkerby Evan Hahn, posted May 16, 2026, tagged #compression #tool #releaseI built ZIP Shrinker, a little browser tool to shrink ZIP files. It also works with formats that are secretly ZIPs underneath, like APK, EPUB, JAR, and many more.Try it out!How does it work?At a high level, this tool (1) re-compresses every file in the ZIP archive with higher compression (2) removes all metadata (3) removes entries for directories.Re-compressingZIP files are typically compressed with an algorithm called Deflate.There are a few tools that can re-compress Deflate data and make it smaller, usually by spending more time on the computation. I took one of these tools, libdeflate, and applied it to each compressed entry in the ZIP.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Evanhahn.
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