Products

Remove backgrounds from images online for free. Upload a photo, click the background, and download a transparent PNG — no signup required.

Boost the volume of your audio and video files online for free. Upload MP3, WAV, MP4, or any media file and download a louder version instantly.

Compare two or more images side by side with pixel-level diff highlighting. Spot every difference between images instantly.

Merge multiple PDFs into one or split pages from existing documents. A fast, browser-based PDF tool with no file uploads to external servers.

Free online calculators for German tax and finance: property transfer tax, severance pay, tax progression, and garnishment limits. All calculations run in your browser.

Measure any angle on any image. Drop an image, place a draggable protractor, and read the angle instantly — everything runs locally in your browser.

Mobile inspection app for playground inspectors. Run DIN EN 1176 checklists, capture photos and defects, and generate professional PDF reports — all offline on your phone.

Interactive photovoltaic yield calculator. Configure your roof, tilt, azimuth, and location — see annual, monthly, and daily PV output instantly. Powered by EU JRC PVGIS data.

Satellite-based early warning for private forest owners. Bark beetle signals, storm damage, and clearing detection on your own plot — weekly digest plus event alerts with image sequence and confidence score.

Open-data refinement for craft businesses: public procurement notices become prioritized weekly reports with fit reasons, deadlines, and action guidance.