AltForge
100% in-browser · nothing uploaded

Bulk alt text & clean filenames
for your product images

AltForge turns your product spreadsheet and image files into review-ready alt-text drafts and tidy, SEO-friendly filename & SKU slugs — processed entirely on your device. Built for small Etsy, Shopify and marketplace sellers.

Launch the free tool → See how it works

Why product image alt text & filenames matter

A one-minute look at how messy filenames and missing alt text quietly cost sellers — and how AltForge fixes it.

🔒 Served straight from AltForge — no YouTube, no third-party embed, no tracking.

Launch the free tool → See how it works →

Your images and data never leave your browser

AltForge is a static web app. When you drop in images or import a CSV, everything is read locally using your browser's own file APIs and processed with in-page JavaScript. No image or spreadsheet is ever uploaded to any server, there is no account, and there are no analytics or tracking scripts. Close the tab and the data is gone.

How it works

Three steps, no sign-up, no upload.

1

Add your data

Import a product CSV (title, SKU, variant, color, material) or type rows by hand, then drag in your image files. Files stay on your device.

2

Generate & review

AltForge assembles alt-text drafts from an editable template and creates clean filename/SKU slugs. Review and fine-tune every row in a live table.

3

Export

Download a CSV of reviewed alt text plus proposed filenames, and a rename manifest (original → proposed) — all generated locally in your browser.

Watch the full workflow (about a minute)

A silent, captioned walkthrough — sample data, image attach, template, review, the over-125 warning, and export.

🔒 The video is served straight from AltForge — no YouTube, no third-party embed, no tracking.

What you get

Everything you need to prep a product-image batch, minus the busywork.

Template-driven alt text

Assemble consistent alt-text drafts from your own attributes and an editable pattern like {title} {color} {material} — image {n}. Live character count warns when a draft runs long.

Deterministic slugs

Lowercase, accent-stripped, safe-character filename and SKU slugs with a configurable separator, max length and automatic de-duplication.

Bulk review table

One row per image with inline editing, duplicate-filename highlighting, missing-field warnings, bulk regenerate and find & replace.

Clean exports

Download an alt-text + filename CSV and a rename manifest as CSV or plain text, ready to feed your rename workflow.

Try with sample data

One click loads a realistic sample catalog so you can explore the full workflow with no files and no account.

Works offline-friendly

No external CDNs, no fonts phoning home, no trackers. Once loaded, the tool runs on your machine.

Simple pricing

The core tool is free and stays in your browser. A paid tier is planned for power users — it isn't live yet and collects nothing today.

Free
€0
  • Unlimited images per batch
  • CSV import & manual entry
  • Alt-text drafts & slug generation
  • Bulk review, find & replace
  • CSV & rename-manifest export
  • 100% local — nothing uploaded
Use it now
Coming soon
Pro (planned)
TBD / later
  • Saved templates & presets
  • Reusable brand vocabularies
  • Batch project files
  • Advanced slug & naming rules

No checkout, no email capture, nothing to buy today. This is a roadmap preview only.

Prep your next product-image batch in minutes

Free, private, and ready right now — no account required.

Launch the free tool →