Alt Text for SEO: Good and Bad Examples with Real Photos

If you're searching for "alt text seo imagenes", you probably have a specific file and a specific limit to meet — file size, format, or compatibility. This guide gets straight to it: what to do, which tool to use, and how not to wreck quality along the way.

The problem this guide solves

Searching for "alt text seo imagenes" usually means you have a concrete file that does not fit a limit, format, or destination — not that you want compression theory. This guide goes straight to the practical flow: what to do, in what order, and with which tool, to solve "alt text seo imagenes" without losing more quality than necessary.

SMALLIMG processes images in your browser: nothing is uploaded to an external server. That matters when you work with client photos, ID documents, or product material that should not pass through third parties.

What to know before you start

Before compressing or converting, identify three things: target format (JPG, PNG, WebP, embedded PDF…), maximum allowed weight if there is a limit, and pixel size if the platform requires it. Without that, it is easy to optimize the wrong variable — for example, lowering quality when the real issue was excessive resolution.

If your image already went through WhatsApp, Instagram, or a «save for web» editor, assume it already has lossy compression. Compressing hard again will worsen the result — start from the camera original or an uncompressed export when possible.

Step by step with SMALLIMG

Open the relevant SMALLIMG tool (compress, convert, or resize as needed), load your file, and check the live preview with file size. Adjust quality and format until you meet the goal — whether that is getting under 1 MB, converting to WebP, or exporting universal JPG.

Download and visually check high-contrast edges, smooth sky gradients, and fine detail — the first places artifacts appear if you over-compressed. If something looks off, raise quality slightly and re-export: faster than fixing a published image.

Honest comparison with other options

TinyPNG delivers similar compression quality for PNG and JPG, with the difference that your files pass through its servers — fine for public assets, less ideal for personal documents. Squoosh, from Google Chrome Labs, offers full technical control (codec, effort, split comparison) in exchange for a developer-oriented interface.

SMALLIMG prioritizes speed and privacy: no signup, local processing, conversion between common formats, and compression with instant preview. No tool is «best» absolutely — it depends whether you value fine control (Squoosh), extreme simplicity (TinyPNG), or a private all-in-one flow (SMALLIMG).

Tips to avoid making the image worse

Compress once at the final step of your flow, not at every intermediate step. If you publish on social networks, remember the platform will process again — start from a well-prepared file that is not over-compressed, as explained in publishing without losing quality.

Always keep an untouched copy of the original. If tomorrow you need another version (larger, different format, another crop with SmallAdapt), starting from the original avoids stacking generations of loss.

Frequently asked questions

How far can I compress before it shows? It depends on content: skies and plain walls tolerate more compression than overlaid text or fine hair. As a practical rule, 75–85% quality in JPG or WebP is usually safe for general photos — see reducing JPG weight without losing quality.

Do I lose EXIF metadata when converting? Yes — most web conversion and compression flows strip GPS, camera model, and embedded date, which is often desirable for privacy. Keep a copy beforehand if you need them. More in what EXIF metadata is.