Design
Generate professional color schemes and palettes for design projects
color-scheme-generatorDesign
Apply sepia toning effects to colors with classic, warm, cool, and custom sepia styles
color-sepia-tonerAstronomy
Find visible constellations and zodiac signs for any date
constellation-finderNetwork
Validate RFC 8294 BGP community regex patterns against a set of communities, match sample AS-paths, and generate Cisco/Juniper/FRR route-policy output.
bgp-community-string-regex-tester-and-looking-glassMedia
Review sharpness, exposure and near-duplicates. Keep your best photos, not just the highest score.
batch-photo-quality-cullerMedia
Estimate per-channel signal-to-noise ratio from separate program and noise-only regions, with an offline ZIP report.
audio-snr-estimatorMedia
Scan the inaudible band of your recordings for hidden high-frequency tones: tracking beacons, flyback whine, aliasing images - with frequencies, durations and classifications.
audio-ultrasonic-content-scannerMedia
Measure wow and flutter of tape and vinyl transfers: weighted RMS per AES6/IEC 60386/DIN 45507, 2-sigma peak, and drift / wow / flutter / scrape band breakdown.
audio-wow-flutter-measureMedia
Measure your master once, then see the playback gain every major platform will apply — Spotify, Apple Music, YouTube, Tidal, Amazon, Deezer and more.
audio-streaming-loudness-previewMedia
Limit a master to a chosen true-peak ceiling (-1, -2, -1.5 or -0.3 dBTP) with a measure-limit-verify loop: FFmpeg’s lookahead limiter is driven below the ceiling by an inter-sample margin, and the result is re-measured with the BS.1770 oversampled meter until the true peak genuinely sits under target.
audio-true-peak-safe-limiterMedia
Merge two single-language subtitle files (SRT or WebVTT) into one bilingual track — primary language on top, secondary below — aligning cues by time overlap or cue index.
bilingual-subtitle-mergerUtilities
Score your backup stack (CD-R, BD-R, M-Disc, LTO tape, HDD, SSD, S3 Glacier Deep Archive, Backblaze B2) across 5/10/25/50-year horizons: media life bands, drive-generation traps, bit-rot math, TCO and a 3-2-1 gap report.
backup-media-decade-verify-restore-planner-cdr-mdisc-lto-tape-cloud-tier