Save mobile data: compress before you upload

In Brazil and much of Latin America, mobile plans are often prepaid and metered. People already know the trick: compress a video or photo before sending it on WhatsApp. Developers hit the same wall when a “free online converter” asks them to upload a 8 MB phone photo so a server can shrink it—and then Base64 it.

That workflow charges you twice: once for the fat upload, again when the result travels back.

What we built instead

Two browser-only tools on Base64Encoding.com:

1. Compress image — resize, pick WebP/JPEG/PNG quality, see % saved, then download or copy Base64 / data URI. Canvas stays on your device.
2. Gzip compress / decompress — shrink JSON, logs or text with gzip/deflate, or expand a payload. Optional Base64 of the result for APIs.

Neither tool uploads your file for compression. That matters when the file is a personal photo, a customer receipt or a config that should not sit on a random SaaS disk.

Market gap (why this is SEO worth doing)

Search intent clusters that upload-era tools poorly serve:

• “comprimir imagem online sem enviar” / compress image without upload
• “reduce photo size before WhatsApp / e-mail”
• “gzip then Base64” for API payloads
• “save mobile data” developer utilities next to Base64 (few Base64 sites teach this)

We pair compression with the Base64 workflow people already use here—encode image, embed data URI, ship JSON—so one site covers shrink → encode → verify.

Practical checklist

• Photos for the web: max width 1280, WebP quality ~0.8, then Base64 only if you must inline.
• Screenshots with sharp UI: try PNG; if still large, WebP lossless or JPEG.
• JSON APIs: gzip first; Base64 second; never Base64 a huge uncompressed dump into an LLM prompt (AI guide).
• Confirm your CDN actually serves gzip/Brotli with the gzip test.

Full walkthrough: Compress before Base64.