Blog – Tips & How-to Guides
Step-by-step guides for audio and image editing — free, GDPR compliant, no registration required.
No More Subscription Madness: Why KodiniTools Chooses Freedom Over Paywalls
The philosophy behind KodiniTools: free, unrestricted tools instead of forced subscriptions — funded by voluntary donations instead of rigid paywalls.
Visualizer Effects: 130+ Audio Visualizations, Multi-Layer & Beat Reactions in Your Browser
GPU effects from bars to light rays to mandalas, portrait effects for your own images, multiple layers with blend modes, beat punch and onset reactions — free, no upload.
Watermark Multiple Images at Once: Protect Hundreds of Photos in One Pass
Set a text watermark with font, size, color, opacity, rotation and position once, check it live on all selected images and export as ZIP — no upload.
Cut Audio Online: Trim & Export with Millisecond Precision
Set start and end via waveform or millisecond input, fade-in and fade-out, preview, cut repeatedly and export as WAV — no upload.
Ultimate Music Player: Play Local Music in Your Browser with a Visualizer
Load files or whole folders via drag and drop, playlist with shuffle and repeat, LED equalizer visualizer, all common audio formats — no upload.
Alarm Tool: Create and Record Your Own Alarm Sound with Oscillators
Design alarm and signal tones from up to 12 oscillators, set waveform, frequency, envelope and filter, save as a preset and record — in your browser.
Extract Colors from an Image & Generate a Color Palette: Free in Your Browser
Read the dominant colors of any image as HEX or RGB, adjust the image live and create harmonious palettes with the spacebar — no upload.
Online Equalizer: Use a 19-Band EQ with Compressor Free in Your Browser
19 frequency bands from 20 Hz to 20 kHz, presets for rock, pop and podcast, dynamic compressor, level meter and export as WAV or WebM — no upload.
Online Text Editor: Write, Format & Export Text Without Installing Anything
Write, format, insert images, Markdown preview, word counter, print and save — free in your browser, no upload.
How to Create a Playlist: Generate M3U, PLS & XSPF Free in Your Browser
Add audio files, set the order, save as M3U, M3U8, PLS, XSPF, CUE, CSV or JSON — no upload, directly in your browser.
How to Change Audio File Format: GDPR-Compliant & Free
MP3, WAV, OGG, FLAC, AAC — which format for what? And what does GDPR-compliant mean for audio converters?
How to Convert JPG to WebP: Images up to 30% Smaller
How WebP improves your Google rankings and how conversion works in 5 steps — free, no upload needed.
How to Normalize Audio: LUFS & dBFS Explained
Spotify -14 LUFS, Podcasts -16 LUFS, Broadcasting -23 LUFS — which standard applies when?
How to Create a Music Video for TikTok Free (No App)
Use the Audio Visualizer in your browser — MP4 export in vertical 9:16 format for TikTok and Reels.
How to Resize Multiple Images at Once: Batch Editing Made Easy
Scale 100+ images in seconds, rename and export as ZIP — without installing any software.
How to Create a Photo Collage Free Online Without an App
Layouts for Instagram, Pinterest and printing. Images never leave your browser — GDPR compliant.