Comprimir imagens online
Reduza o tamanho dos seus arquivos JPG, PNG e WebP instantaneamente. Gratuito, sem limites e completamente privado — nada é enviado para nenhum servidor.
100% Privado — Seus arquivos nunca saem do seu dispositivo. Todo o processamento acontece no seu navegador.
Solte suas imagens aqui
ou clique para selecionar — JPG, PNG, WebP suportados
80%
Arquivo menor Melhor qualidade
Resultados
Como funciona o compressor de imagens?
Esta ferramenta usa as capacidades de processamento de imagem integradas ao seu navegador (Canvas API) para recodificar suas imagens com uma configuração de qualidade inferior. Todo o processo é executado localmente no seu dispositivo — suas imagens nunca são enviadas para nenhum servidor. Nenhum byte sai do seu computador.
Tips for Better Image Compression
- Start at 80% quality — For most photographs, a quality setting between 75–85% offers the best balance between file size and visual fidelity. The human eye rarely notices differences above 80%.
- Choose WebP for modern use — If your images are destined for the web, WebP delivers 25–35% smaller files than JPEG at equivalent quality. All major browsers now support it.
- Use JPEG for photos, PNG for graphics — JPEG compression excels with photographic content. PNG is better for screenshots, logos, and images with sharp edges or text.
- Compress before uploading — Reducing file size before uploading to social media, email, or your website saves bandwidth and speeds up load times.
- Batch process for efficiency — Drop multiple images at once to compress an entire folder in seconds. Use "Download All" to grab everything in one click.
- Compare before and after — Always check the file size reduction shown in the results. If the savings are minimal, try lowering the quality slider by 5–10 points.
- Keep originals as backup — Since compression is lossy (for JPEG/WebP), always keep your original high-resolution files.
When to Compress Your Images
- Website optimization — Large images are the #1 cause of slow-loading websites. Compressing product photos, hero banners, and blog images can cut page load times by 40–60%.
- Email attachments — Most email providers limit attachment size to 25 MB. Compressing high-resolution photos lets you share more images in a single email.
- Social media uploads — Platforms like Instagram, Facebook, and Twitter re-compress your images anyway. Pre-compressing gives you more control over the final quality.
- Cloud storage savings — If you sync thousands of photos to cloud services, compression can free up significant storage space without noticeable quality loss.
- E-commerce product listings — Online marketplaces often have file size requirements. Compressed images load faster in search results.
- Document preparation — When embedding images in PDFs, Word documents, or presentations, compressed images keep the document file size manageable.
Perguntas frequentes
É realmente gratuito?
Sim, completamente gratuito e sem limites ocultos. Somos financiados pelos anúncios exibidos na página — nunca vendemos seus dados nem acessamos seus arquivos. Comprima quantas imagens quiser, sempre que quiser.
Minhas imagens estão seguras?
Suas imagens nunca saem do seu dispositivo. Há zero tráfego de rede durante o processamento — você pode verificar isso abrindo as Ferramentas do Desenvolvedor do seu navegador (aba Rede). Fisicamente não podemos ver nem acessar seus arquivos.
Quais formatos são suportados?
Você pode comprimir e converter entre os formatos JPEG, PNG e WebP. Importe qualquer um desses formatos e escolha o formato de saída desejado.
Por que meu arquivo PNG ficou maior após a compressão?
PNG é um formato sem perdas — o controle de qualidade não tem efeito na saída PNG. Se você precisa de um arquivo menor, tente converter para JPEG ou WebP.
O que é WebP?
WebP é um formato de imagem moderno desenvolvido pelo Google que oferece compressão superior para imagens na web. Normalmente alcança tamanhos de arquivo 25-35% menores comparado ao JPEG com qualidade visual equivalente.
Funciona offline?
Sim! Uma vez que esta página é carregada, você pode se desconectar da internet e a ferramenta continuará funcionando perfeitamente, já que todo o processamento é feito localmente.
What is the difference between lossy and lossless compression?
Lossy compression (JPEG, WebP) permanently removes some image data to achieve smaller files — the lower the quality setting, the more data is discarded. Lossless compression (PNG) reduces file size without any quality loss by finding more efficient ways to encode the same data. For photographs, lossy compression at 80% quality is usually indistinguishable from the original.
Can I compress multiple images at once?
Yes! Simply drag and drop multiple files or select several images at once. ImgLab will compress all of them using your chosen quality setting and output format. Use the "Download All" button to save every compressed image in one click.
What quality setting should I use?
It depends on your use case. For web images, 70–80% offers a good balance. For print or archival purposes, stay above 90%. For social media where platforms re-compress anyway, 75% is usually sufficient. The preview lets you compare quality before downloading.
Is there a file size limit?
There is no hard limit since everything runs in your browser. However, very large images (50+ MP) may be slow to process depending on your device's memory and processing power. For best performance, images up to 20 MP work smoothly on most devices.
Does compression remove image metadata (EXIF data)?
Yes — when ImgLab compresses your image using the Canvas API, metadata such as EXIF, IPTC, and XMP data is automatically stripped. This includes camera settings, GPS coordinates, and timestamps. If you need to preserve metadata, consider using our Metadata Viewer to inspect it first.
How much can I reduce my file size?
Typical results vary by source image and format. A 5 MB JPEG photo at 80% quality usually compresses to 1–2 MB (60–80% reduction). Switching to WebP can yield even better results — up to 35% smaller than the equivalent JPEG. PNG files with many colors may see modest reductions, while screenshots and graphics with flat colors can shrink dramatically.