Shape audio with multi-band EQ — boost bass, cut mud, add air to dull recordings. Fix a boomy room recording fast — local processing, unlimited saves.
Runs on FFmpeg
Content reviewed October 2026 · About Toolzum
Shrink MP3 files by lowering bitrate with quality presets — fit podcasts into feed limits. Cut a 50 MB episode to 15 MB cleanly — local FFmpeg work, unlimited saves.
Record voice memos straight from your microphone with live levels — interviews, notes, ideas. Capture clean audio without installing apps — local recording, unlimited saves.
Remove hiss, hum, and background noise from recordings with profile-based reduction. Rescue fan-noisy interviews in one pass — local FFmpeg work, unlimited saves.
Add text, highlights, drawings, shapes, notes, signatures, and images to any PDF. Rotate, duplicate, and OCR pages (8 languages), or use one-click AI to summarize, fix, or translate. Editing runs 100% locally. AI actions are optional and cost credits, shown on each button before you click. Free, no watermark — no signup needed to start, unlimited saves.
Rotate sideways or upside-down PDF pages 90/180/270° — fix phone scans in bulk. Straighten 60 landscape pages at once — local pdf-lib rotation, unlimited saves.
Cut 200–400 Hz a few dB — muddiness lives there. Then add a gentle high shelf above 8 kHz for air. Small moves; ears fatigue fast.
Start from the Vocal Boost preset, trim 250–500 Hz mud a few dB, then lift 2–5 kHz presence gently. Podcast chains start here — small moves, ears fatigue fast.
No — clipped peaks are destroyed data, and EQ can't restore them. Re-record hot takes; EQ polishes clean captures only.
No — EQ runs locally in your browser. Saves never touch a meter — downloads on local tools are unlimited.
Noise Reducer
Remove hiss, hum, and background noise from recordings with profile-based reduction. Rescue fan-noisy interviews in one pass — local FFmpeg work, unlimited saves.
Audio Compressor
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.