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.

Inspection app for playground inspectors: checklist based on EN 1176-7, photos, defects and the PDF inspection report on site, plus due dates and the record book. iPhone and iPad, offline, in the App Store.

Planned inspection app for lightning protection specialists: visual check, earthing measurements and the PDF inspection report on one device, checklist based on EN 62305-3. In development — sign up to be told when it ships.

Inspection app for the annual gravestone stability check: grave register, push test, defects with deadlines and the PDF report on site. For iPhone and iPad in the App Store; try the demo in your browser.

Leak-check and record-keeping app for refrigeration contractors: intervals from the CO2 equivalent, top-ups, leak rate and the Article 7 logbook as PDF. For iPhone and iPad in the App Store; try the demo in your browser.

Leak detection report app for contractors: claim details, methods with readings, measuring points on the floor plan, photos and signatures on site, the PDF for the insurer before you leave. For iPhone and iPad in the App Store; try the demo in your browser.

Legionella log for hotels, guesthouses and campsites in Germany: which empty rooms need flushing today, temperatures, the lab test, the steps after a finding and the operating log as a PDF. For iPhone and iPad in the App Store; also runs in your browser.

Quote app for chimney sweeps: capture the installation, pick mandatory and additional services at your own prices, share the PDF quote on site. iPhone and iPad, offline, data stays on the device. Available on the App Store.

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.

Moving ME10 and Creo Elements/Direct archives to DWG or DXF: check the archive and test a drawing for free in the browser, then a pilot with clear acceptance criteria.

Model noise sources on a map, compare mitigation scenarios and save projects as JSON. Free to use without an account. PDF and CSV report package: €2.99 including 19% VAT per project snapshot. Preliminary planning, not an approval-ready noise study.

Enter hazard labels for cleaners, adhesives and coatings, check them against the CLP size rules and approve them. Editing is free; SVG or print output costs €2.99 including 19% VAT per label.

For property managers, owners' associations and private landlords: shared defect reports with status, documents in one place, owners' meetings prepared. Sign up for the test phase.

Local-first desktop software for German club treasurers: member management, pro-rated dues runs, and wallet membership cards — all data stays on your machine, no forced cloud.

Digital stamp cards for cafés and shops — in Apple Wallet or as a web card on any phone. Customers scan a QR, collect stamps, and redeem rewards — no app to install.