Tool, language and decoders for working with binary formats.

Basic usage is fq . file, fq d file or fq 'some query' file ....

For details see the manual, also available as man fq and as AsciiDoc.

fq is a tool, language, and decoders for working with binary formats and data. In most cases it behaves and feels similar to jq and it also uses the same expression language. To get the most out of fq it's recommended to learn more about jq.

It features a structural hex viewer, nested format decoding, slicing and concatenating binary data, bit-level decoding and an interactive REPL with auto-completion.

• Make binaries more accessible, queryable and sliceable.
• Nested formats and bit-oriented decoding.
• Quick and comfortable CLI tool.
• Bits and bytes transformations.

• Make it useful enough that people want to help improve it.
• Inspire people to create similar tools.

aac_frame, adts, adts_frame, aiff, amf0, apev2, apple_bookmark, ar, asn1_ber, av1_ccr, av1_frame, av1_obu, avc_annexb, avc_au, avc_dcr, avc_nalu, avc_pps, avc_sei, avc_sps, avi, avro_ocf, bencode, bitcoin_blkdat, bitcoin_block, bitcoin_script, bitcoin_transaction, bits, bplist, bsd_loopback_frame, bson, bytes, bzip2, caff, cbor, csv, dns, dns_tcp, elf, ether8023_frame, exif, fairplay_spc, fit, flac, flac_frame, flac_metadatablock, flac_metadatablocks, flac_picture, flac_streaminfo, gif, gzip, heif, hevc_annexb, hevc_au, hevc_dcr, hevc_nalu, hevc_pps, hevc_sps, hevc_vps, html, icc_profile, icmp, icmpv6, id3v1, id3v11, id3v2, ipv4_packet, ipv6_packet, jp2c, jpeg, json, jsonl, leveldb_descriptor, leveldb_log, leveldb_table, luajit, macho, macho_fat, markdown, matroska, midi, moc3, mosaic, mp3, mp3_frame, mp3_frame_vbri, mp3_frame_xing, mp4, mpeg_asc, mpeg_es, mpeg_pes, mpeg_pes_packet, mpeg_spu, mpeg_ts, msgpack, negentropy, nes, ogg, ogg_page, opentimestamps, opus_packet, pcap, pcapng, pg_btree, pg_control, pg_heap, png, prores_frame, protobuf, protobuf_widevine, pssh_playready, rtmp, safetensors, sll2_packet, sll_packet, stl, tap, tar, tcp_segment, tiff, tls, toml, tzif, tzx, udp_datagram, vorbis_comment, vorbis_packet, vp8_frame, vp9_cfm, vp9_frame, vpx_ccr, wasm, wav, webp, xml, yaml, zip