An invoice, a tempo and a sealed message, none of them uploaded

Take a freelancer who has to send an e-invoice that a client's bookkeeping system will accept, and would rather not open an account to do it. A DJ who wants the key and tempo of a track before a set. Someone who has been sent a PGP message locked with a password. All three can do it at browserbasedtools.com this week, and none of their files leave the device.

The invoice is drawn while it is typed

The invoice builder was rebuilt around a real A4 page. The form sits on one side and the invoice on the other, redrawing with each keystroke, so there is no need to download a file to see how it looks.

Company details, a logo and an accent colour are saved once as a business profile, and every new invoice starts with them. Past clients come back from a dropdown.

Each line takes a description, quantity, unit, price, discount and VAT rate. Units cover hours, pieces, kilograms and days. Pressing Enter at the end of a row starts the next one. A discount on one line, or on the whole invoice, flows through the VAT breakdown, which is grouped by rate and always adds up to the total. IBAN, BIC and payment terms appear on the page and inside the e-invoicing file.

The same figures leave in six forms: PDF to send, XLSX or CSV for the bookkeeper, UBL 2.1 or SI-UBL for e-invoicing, or a print at true A4 that matches the preview. SI-UBL carries the Dutch NLCIUS profile. Saved invoices stay in the browser on that device.

Eight tools for audio

BPM Detector. Drop an MP3, WAV or FLAC and read the tempo to a tenth of a beat per minute, with the beat grid drawn over the waveform to check that it lines up.

Key & Camelot Finder. The key of a track, shown on the Camelot wheel with the three keys that mix into it highlighted. The recording's tuning is measured first, so a track mastered slightly sharp still lands on the right key.

LUFS Loudness Meter. Integrated loudness, loudness range and true peak to EBU R128 and ITU-R BS.1770-4, with the target of the chosen streaming service drawn across the meter. The meter is checked against the EBU's own test cases.

Spectrogram Viewer. A file on a log frequency axis. A straight edge near 16 to 20 kHz shows where a lossy encoder cut the top off.

Spectrum Analyser. Live from the microphone or from a file, with peak hold. Nothing is recorded.

Tap Tempo. Tap along on the keyboard and read the tempo. A mistimed tap is ignored and shown struck through.

Instrument Tuner. Chromatic, with an adjustable reference pitch. Notes with a weak fundamental still read correctly.

Waveform & Peak Viewer. The waveform at true full scale, never normalised, so two files can be compared. Clipped runs are marked.

A password is a way in

The PGP tool was rebuilt too. It encrypts, decrypts, signs and verifies; generates a key pair with a passphrase and a revocation certificate; and imports a key pasted as text or dropped as a file. Keys and messages work with GnuPG.

One dead end is gone. A message encrypted with a password rather than a key used to send its reader to a key picker, which could not help. The tool now recognises that kind of message and asks for the password.

For how BrowserBasedTools fits with the foundry's other products, see What the foundry's products do.