Apply smooth volume fades to your audio tracks. Supports fade in, fade out, or both with linear, logarithmic, exponential, and S-curve transitions. Perfect for podcast intros and outros. Audio never leaves your device — conversion and editing run locally in your browser with FFmpeg WASM.
Runs on FFmpeg
Content reviewed October 2026 · About Toolzum
Level whole audio batches with peak normalization to a target dBFS level (default -3) without crushing dynamics. Networks even out 30 episodes so listeners stop riding volume — local Web Audio work, 2 free batches a day.
Combine multiple audio files into one continuous track. Supports crossfade between songs and automatic volume normalization. Perfect for making mixtapes, podcasts, and audiobooks.
Even out loud and quiet parts of any audio with dynamics compression — podcasts at one steady volume. Stop riding the volume knob — local processing, unlimited saves.
Downscale a batch of images to one max width (default 1920px) with an optional bottom-right watermark, then download everything as a ZIP. Same max-width and watermark apply to every image — local Canvas work, 3 free images a day.
Creates stylish Unicode text in 16 ready-made styles — 8 letter alphabets including double-struck, cursive, gothic, and small caps, plus 8 symbol decorations. Perfect for social media bios, gaming usernames, Discord profiles, and Instagram captions where standard fonts will not render.
Linear, logarithmic, exponential, and S-curve fades with adjustable length (0.5–30 seconds, or 0–100% of the track in percentage mode).
Either end independently — fade in, fade out, or both together (defaults: 2 s in, 3 s out).
Proper fades eliminate the pops that hard cuts leave. Proper fades eliminate the pops that hard cuts always leave.
No — processing runs locally in your browser; unlimited saves on local tools.
Audio Cutter
Trim and cut audio files online — MP3, WAV, M4A, FLAC, and OGG. Set start and end times with sliders, then download the trimmed MP3 clip.
Audio Merger
Combine multiple audio files into one continuous track. Supports crossfade between songs and automatic volume normalization. Perfect for making mixtapes, podcasts, and audiobooks.