The threshold decides the level where compression begins: thresholdDb accepts -100 to 0 dB and the effect defaults to -24 dB.
Library
Reading your local library…
Smart DJ File Renamer.
Deterministic batch renamer for DJ library tracks based on metadata tags and audio analysis.
Load audio files, folders or playlists
Inspect metadata tags, detect messy names, and batch rename automatically or with manual inline edits.
Drop your audio tracks here or click to browse
Lossless (WAV, FLAC, AIFF) and Lossy (MP3, AAC, M4A) · Local Processing Only
Duplicate Detector & Safe Archiving.
Identify identical and alternate quality duplicate tracks in your collection.
Drag & drop files or folders
or click to browse
Detect exact duplicates (SHA-256) and acoustic matches with quality recommendations
←Home
DJ Database & Playlist Converter.
Convert Rekordbox, Traktor, VirtualDJ and Serato collections 100% locally.
Need to convert a USB flash drive in-place without duplicating audio?
Use DJ USB Converter In-Place →Source Library
or click to browse
Supports Rekordbox .xml, Traktor .nml, and VirtualDJ .xml
←Home
DJ USB Converter.
Transmute DJ USB drives between Pioneer, Denon Engine OS and Serato in-place without copying or duplicating audio files.
Looking to convert desktop collection files (.xml, .nml, .crate, .sql)?
DJ Library ConverterIntegrity Guarantee & Safe Backups
- Zero audio bytes duplicated: MP3, WAV, AIFF and FLAC files remain untouched in their original locations on the drive.
- Automatic pre-write backup: Before any database file is updated, an exact copy is verified and saved to Deckmatics Backups.
- Explicit access: The browser requests read/write permissions only when you explicitly click the button below.
DJ USB Storage Media
Transmutes existing DJ USB drives in-place without copying or duplicating audio files.
Connect or select your USB drive to inspect its DJ topology.
Pioneer, Engine Library and _Serato_ folders will be checked to provide cross-compatibility without touching your audio tracks.
Multitrack Editor.
BAR1.1.1
TIME00:00.000
BPM
SIG4/4
Snap
Grid
TRACKS (2)
1(0:00)
2
3
4
5
6
7
8
9(0:16)
10
11
12
13
14
15
16
17(0:32)
18
19
20
21
22
23
24
25(0:48)
26
27
28
29
30
31
32
33(1:04)
34
35
36
37
38
39
40
41(1:20)
42
43
44
45
46
47
48
49(1:36)
50
51
52
53
54
55
56
57(1:52)
58
59
60
61
62
63
64
65(2:08)
66
67
68
69
70
71
72
73(2:24)
74
75
76
77
78
79
80
81(2:40)
82
83
84
85
86
87
88
89(2:56)
90
Track 1
PanC
Volume-3.0 dB
Track 2
PanC
Volume-3.0 dB
MMASTER
BUSPanC
Volume0.0 dB
MASTER OUTPUT BUS|0.0 dB
Empty Project Session
Drag and drop audio files here or use the buttons below to import tracks.
Audio Compressor FX.
Drag & drop files or folders
or click to browse
Studio Audio Recorder.
High-fidelity audio recording for microphones, DJ USB sound cards or system audio with peak and RMS metering
IDLE
00:00.000
PEAK VUMETER
L
-inf
0 dB-3-6-12-18-24-36-48-60 dB
R
-inf
48.0 kHz · 24-bit PCM
Audio Compressor Online
Audio Compressor Online
Control dynamic range in the browser with the compressor parameters the tool actually exposes.
Supported formats: WAV MP3 AIFF
What this tool actually does
Control dynamic range in the browser with the compressor parameters the tool actually exposes.
The ratio controls how much the signal above the threshold is reduced, from 1:1 up to 20:1, with 4:1 as the default.
Attack is the time the compressor takes to react: attackSec accepts 0 to 1 second and defaults to 10 ms.
Release is the time it takes to return to the original level: releaseSec accepts 0 to 1 second and defaults to 150 ms.
The knee softens the entry into compression around the threshold: kneeDb accepts 0 to 40 dB and defaults to 10 dB.
Makeup gain restores the level lost to compression through its own gain node: makeupGainDb accepts -12 to +24 dB, defaults to +2 dB, and the effect also exposes inputGainDb and mixPct.
The panel derives a smoothed gain-reduction figure from the active parameters and draws a transfer curve of input versus output, a Gain Reduction (GR) meter and an output level meter.
The compressed result is exported as WAV, MP3 or AIFF by re-rendering the graph offline and downloading the file in the browser.
Real-world use cases
What people actually solve with this converter before they play live.
Prepare tracks before a DJ set.
Fix or process files without opening a full DAW.
Keep the workflow focused on the specific task instead of a general-purpose editor.
Recommended Academy guides
Sample rate, bit depth, codecs and booth errors explained with rigour.
Dynamics & Compression · ES
Dynamic Processing for Audio and DJing: Compressors, Limiters, Clippers and Sidechain
A complete technical guide to dynamics processors: compressor, limiter, clipper, multiband compressor, gate, de-esser, transient shaper and sidechain (Academy guide in Spanish).
Read guide (ES)
Mixing & Gain Staging · ES
Audio Mixing Guide: Gain Staging, EQ, Compression and the Mix Bus
A complete mixing guide: static balance, gain staging, EQ, compression, sidechain, saturation, depth with reverb and delay, stereo width, phase and the mix bus (Academy guide in Spanish).
Read guide (ES)
Related tools
Complementary utilities to finish preparing your tracks.
Pro Brickwall Limiter: Mastering True Peak Limiting
Mastering-grade brickwall limiter with surgical lookahead and zero inter-sample clipping for maximum loud and clean output.
Open tool
3-Band Multiband Compressor: Linear-Phase Dynamics
Independent multi-spectral dynamic compression with transparent linear-phase crossovers, band solos, and per-band leveling.
Open tool
7-Band Parametric EQ: Surgical Audio Equalizer with RTA
Shape sound curves with a 7-band parametric equalizer featuring live spectrum RTA visualizer and precise Q-factor controls.
Open tool