# convert.ing-now.com — full guide for AI agents

> Free online audio tools that turn your MP3, M4A or WAV files into graphics: waveform images, DJ wallpapers, spectrograms and animated GIFs. This is the full reference (llms-full.txt); a shorter summary is at /llms.txt.

## About the site

convert.ing-now.com is a free, ad-supported toolkit for turning audio files into visual graphics. Upload an audio file (MP3, M4A or WAV, up to 50MB), and the site converts it server-side with ffmpeg and wav2png into one of four graphic types:

1. **Waveform image** — the amplitude envelope of your audio drawn as a clean waveform.
2. **DJ wallpaper** — the waveform composited onto a choice of desktop wallpaper templates with optional title text.
3. **Spectrogram** — a frequency-vs-time visualisation with selectable colour schemes, saturation and scale.
4. **Animated GIF** — a looping animation of your audio: soundwaves, a live spectrogram, an oscilloscope (avectorscope), or a multiview combining all three.

There are no accounts and no personal data collected. Uploaded files and generated graphics are deleted automatically after 48 hours.

## Core URL patterns

Every tool follows the same flow: **landing (upload) → options → download**, plus a **public share page** per creation. Creation ids are 64-char sha256 hex (call it `<id>` below).

- Tool landings (the uploaders live here):
  - Waveform: `https://convert.ing-now.com/mp3-audio-waveform-graphic-generator/`
  - DJ Wallpaper: `https://convert.ing-now.com/dj-audio-wallpaper-generator/`
  - Spectrogram: `https://convert.ing-now.com/audio-spectrogram-creator/`
  - Animated GIF: `https://convert.ing-now.com/audio-waveform-animated-gif-creator/`
- Options pages (per upload id):
  - Waveform + wallpaper options: `https://convert.ing-now.com/mp3-audio-waveform-graphic-generator/options/<id>/`
  - Spectrogram options: `https://convert.ing-now.com/mp3-audio-spectrogram-graphic-generator/options/<id>/`
  - Animated GIF options: `https://convert.ing-now.com/mp3-audio-animated-gif-graphic-generator/options/<id>/`
- Download pages (confirm the asset exists, show it large):
  - `https://convert.ing-now.com/mp3-audio-waveform-graphic-generator/download/<waveform|wallpaper|spectrogram|animatedgif>/<id>/`
- Public share pages (canonical link target; same path family, `/share/` instead of `/download/`).

## Static pages

- Home (tool chooser): `/`
- About: `/about/` · Privacy: `/privacy/` · Contact: `/contact/`

## Generated assets

Each upload id maps to files in the shared cache area (`/var/www/convertingnow/cache/` on the server), served under web aliases:

- `wav/<id>_<name>.wav` — the intermediate wav every conversion works from
- `png/<id>.png` — the waveform OR spectrogram image (both render to this slot)
- `wallpaper/<id>.jpg` — wallpaper output
- `gif/<id>.gif` — animated gif output
- `thumbs/wallpaper_<id>.jpg` and `thumbs/spectrogram_<id>.jpg` — feed thumbnails

Public asset URLs: `/waveform/<id>.png`, `/wallpaper/<id>.jpg`, `/animatedgif/<id>.gif`, `/thumbs/<file>`.

## Key facts for agents

- **Upload flow**: the browser POSTs the raw file body to the FileUpload ajax class with an `X-FILENAME` header and `variables=true&uploadfilenameprefix=upload` in the query; the response returns `filename`, `fileid` (the 64-hex id) and `duration`.
- **The 64-hex id is the whole data model**: options, download and share urls all key off it, and it is the file prefix/suffix in the cache.
- **48h lifetime**: the site copy says uploads are deleted after 48 hours, and an expired share page shows a friendly "creation has expired" message. Actual cache retention (host cron) is more generous: intermediate wav 1 day, uploaded mp3/m4a/mp4 2 days, generated png/gif/thumbs 30 days — so share links and asset urls can keep working for weeks.
- **Audio input types**: MP3, M4A, WAV (extension + MIME allow-listed, 50MB cap).
- **Wallpaper templates**: keyed like `xmas1`…`xmas11` and `template1`…`template20`; previews at `/wallpaper/templates/wallpaper-<key>.jpg`.
- **Spectrogram options**: colour scheme 1–9 (intensity, channel, rainbow, moreland, nebulae, fire, fiery, fruit, cool), intensity/saturation −10..10, frequency scale 1–6 (lin, sqrt, cbrt, log, 4thrt, 5thrt).
- **GIF animation types**: soundwaves (30s), spectrogram (10s), avectorscope (30s), multiview (30s) — 460x240 or 640x360-ish composited frames with optional title overlay.

## Content & licensing

- Site content: © convert.ing-now.com.
- Conversion is powered by [ffmpeg](https://www.ffmpeg.org/) and [wav2png](https://github.com/beschulz/wav2png) (open source).
- The site is free to access and supported by advertising (Google AdSense, EEA/UK consent-gated via Google's consent UI). We welcome accurate citation and linking.
- Contact: info@convert.ing-now.com

## Technical notes for crawlers

- The site is a PHP application; page HTML is generated server-side per request (HTML caching is currently off).
- There are no APIs to speak of — the two ajax endpoints used by the frontend (file upload + conversion) write to the cache and are not intended for external callers.
- robots.txt explicitly allows polite AI agents. There are only a handful of static routes plus per-creation option/download/share pages — nothing needs bulk crawling.