FileKeeps

Guides

Guides

Practical guides on handling your files safely in the browser. Every article links straight to the actual tool.

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Media

How to Fix Muddy Audio with an Equalizer — Tuning by Ear

Rescue recordings with boomy lows or buried voices using a 10-band equalizer. Slider changes apply while you listen, and everything runs inside your browser.

4 min read08/14/2026
Images

How to Make a Korean Name Stamp (Dojang) Image — Transparent PNG

Create a traditional-style name stamp image for documents — Korean or Hanja characters, six typefaces, round or square, with a realistic ink texture. Saved as a transparent PNG.

3 min read08/14/2026
Media

How to Extract Audio from Video as MP3 (In Your Browser, No Upload)

How to get the audio — whether speech or music — out of a video and save it as MP3 or M4A, without uploading the large video file to a server.

4 min read08/01/2026
AI

Automatically Create Presentation Slides with Claude: pptx and theme-factory Skills

Learn how to draft slide decks using Claude's pptx skill and apply unified designs with theme-factory to cut down your presentation prep time.

6 min read07/31/2026
Documents

Comparing Local LLMs in 2026: Which One Should You Choose Among Llama, Mistral, Phi, and Gemma?

Explore the traits of four major open-weight model families running on laptops and browsers, plus key factors for on-device deployment.

7 min read07/31/2026
Privacy

Is It Safe to Upload Files to AI? Why Privacy Laws Matter

How privacy regulations constrain AI service design and why local, zero-transfer processing is a powerful solution.

6 min read07/31/2026
AI

Still Just Typing "Summarize This"? 5 Prompts That Level Up AI Document Summaries

'Summarize this' gives you flat results. Five prompts — shape, audience, sources, cutting, and iteration — that change the quality, with real work examples.

7 min read07/31/2026
AI

How to Get AI to Clean Up Tables and Data (5 Prompts)

Real-world prompts that turn messy data into clean, paste-ready tables — columns, sorting, aggregation, format, and handling odd values.

5 min read07/29/2026