JAR File Format

Java Archive category

JAR is a ZIP package carrying Java classes, manifests and resources — the delivery format of every Java application and library.

Typical use: Repack a JAR as ZIP to inspect classes and resources with any unzip tool.

About the JAR format

A JAR is a ZIP with Java manners: class files, a MANIFEST.MF, resources and optional signatures. Any tool that opens ZIPs can open it — but converting to a plain ZIP strips the “is this executable?” ambiguity and makes browsing the contents painless.

Useful for auditing dependencies, extracting embedded resources, or checking what a library actually ships before adding it to a build.

Strengths

✓ Standard Java delivery format
✓ ZIP-based, tools abound
✓ May carry signatures and manifests

Limitations

✗ Not a installer — just a package
✗ Contents are class files, not source

Layout: ZIP with META-INF
Compression: DEFLATE entries
Bundling: Classes + resources
Best for: Java apps and libraries

Convert JAR to…

11 direct directions, sorted A–Z; 🔥 marks popular targets.

JAR to 7Z Hot JAR to APK JAR to TAR Hot JAR to TAR.BZ2 JAR to TAR.GZ Hot JAR to TAR.XZ JAR to TBZ2 JAR to TGZ JAR to TXZ JAR to WIM JAR to ZIP Hot

Convert other files to JAR…

Cross-engine workflows

3DS to JAR 3G2 to JAR 3GP to JAR 3MF to JAR AAC to JAR AC3 to JAR AIF to JAR AIFF to JAR ALAC to JAR AMB to JAR AMR to JAR APE to JAR ASF to JAR AU to JAR AVI to JAR AVIF to JAR AVR to JAR BMP to JAR BVH to JAR CAF to JAR CIN to JAR CSV to JAR CUR to JAR CVS to JAR CVU to JAR DAE to JAR DCX to JAR DDS to JAR DivX to JAR DSS to JAR DTS to JAR DV to JAR E-AC3 to JAR F32 to JAR F4A to JAR F4B to JAR F4V to JAR F64 to JAR FAP to JAR FARBFELD to JAR FBX to JAR FITS to JAR FLAC to JAR FLV to JAR FSSD to JAR GeoTIFF to JAR GIF to JAR GLB to JAR glTF to JAR GRAY to JAR GRAYA to JAR GSM to JAR GSRT to JAR H.264 to JAR HCOM to JAR HDR to JAR HEIC to JAR HEIF to JAR HTK to JAR ICO to JAR IRCAM to JAR J2C to JAR J2K to JAR JFIF to JAR JP2 to JAR JPE to JAR JPEG to JAR JPG to JAR JPT to JAR JXL to JAR LWO to JAR M1V to JAR M2TS to JAR M2V to JAR M4A to JAR M4B to JAR M4R to JAR M4V to JAR MAUD to JAR MD2 to JAR MJPEG to JAR MKV to JAR MOD to JAR MOV to JAR MP2 to JAR MP3 to JAR MP4 to JAR MPEG to JAR MPEG1 to JAR MPEG2 to JAR MPEG4 to JAR MPG to JAR MTS to JAR MXF to JAR OBJ to JAR OGA to JAR OGG to JAR OGV to JAR OMA to JAR OPUS to JAR OTB to JAR PAF to JAR PALM to JAR PBM to JAR PCL to JAR PCX to JAR PDF to JAR PFM to JAR PGM to JAR PLY to JAR PNG to JAR PNG24 to JAR PNG8 to JAR PNM to JAR PPM to JAR PSB to JAR PSD to JAR PVF to JAR QCP to JAR QOI to JAR RAS to JAR RAW to JAR RM to JAR RMVB to JAR S16 to JAR S24 to JAR S32 to JAR S3M to JAR SD2 to JAR SHN to JAR SIXEL to JAR SMP to JAR SNDR to JAR SNDT to JAR SPX to JAR STL to JAR SVG to JAR SVGZ to JAR TAK to JAR TGA to JAR TIF to JAR TIFF to JAR TS to JAR TTA to JAR TXW to JAR U8 to JAR UYVY to JAR VICAR to JAR VMS to JAR VOB to JAR VOC to JAR VQF to JAR VRML to JAR W64 to JAR WAV to JAR WAVPCM to JAR WEBM to JAR WebP to JAR WMA to JAR WMV to JAR WTV to JAR WV to JAR WVE to JAR XBM to JAR XI to JAR XM to JAR XPM to JAR XV to JAR Xvid to JAR Y4M to JAR

Frequently asked questions

What is a JAR file?

JAR is a ZIP package carrying Java classes, manifests and resources — the delivery format of every Java application and library.

How do I convert JAR files online?

Pick a target format from the "Convert JAR to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.

Is it safe to convert JAR files here?

Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.

Which formats can JAR convert to?

This page lists all 11 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.