Last updated: 29 August 2026
Бесплатный онлайн-компрессор изображений для JPG, PNG и WebP
Нужно сжать изображение без отправки на сервер? Наш инструмент позволяет уменьшить размер JPG, PNG и WebP прямо в браузере. Это безопасно и быстро.
AllFileCompressor обрабатывает файлы локально. Ваши данные не покидают устройство, что гарантирует полную конфиденциальность.
Как сжать изображение онлайн
Простой процесс в 4 шага:
- Выберите или перетащите файлы JPG, PNG или WebP.
- Выберите режим: Умный (баланс), Экстрим (минимальный размер) или Низкий (лучшее качество).
- Нажмите «Начать» для локальной обработки в браузере.
- Сравните результат с оригиналом и скачайте сжатое изображение.
- Download the file, or compress another image.
Which Compression Mode Should You Use?
This image compressor exposes three quality presets. Use the table to pick a starting point, then trust the on-page size preview — every photo behaves differently. Start with Smart for most jobs; switch to Extreme only when a destination still rejects the file; use Low Compression when the preview looks soft.
| Mode | Typical size reduction | Best for |
|---|---|---|
| Smart Compress | Balanced cut (quality ~0.8; often a clear drop without looking “crushed”) | Everyday photos, CMS uploads, email, general web use |
| Extreme | Strongest cut (quality ~0.42; usually the smallest file of the three) | Strict caps, messaging apps, forms with tiny photo limits |
| Low Compression | Modest cut (quality ~0.92; prioritizes visual fidelity over maximum shrink) | Portfolios, product detail shots, when artifacts worry you |
Method note: figures describe the built-in quality presets in our browser pipeline (Smart / Extreme / Low), not a single universal %. Always compare KB in the preview after you run this photo compressor.
How Small Does Your Image Need to Be?
People search for ways to reduce image file size because a destination blocked them. Use these practical targets as a starting point, then re-check the live limit on the site you upload to. Mapping real upload limits beats generic advice like "make it smaller for the web."
| Where you are uploading | Practical target size | Suggested mode |
|---|---|---|
| Email attachments (e.g. Gmail total message cap) | Keep images well under ~5–10 MB each when several files share a 25 MB message | Smart; Extreme if still too heavy |
| CMS / WordPress-style media uploads | Often 2 MB default on shared hosting (host-dependent) | Smart first |
| Messaging apps (chat photo shares) | Aim under ~1–2 MB for smoother sends; apps may recompress anyway | Extreme when sends fail |
| Job / visa / exam application photo fields | Commonly 50–200 KB (read the form — rules vary) | Extreme, then resize if still over |
| Marketplace / product listing photos | Often 1–5 MB per image or a platform max | Smart for catalog shots |
| Website performance / page load budget | Hero images often aim for a few hundred KB when possible | Smart or Extreme |
Last checked: 29 August 2026. Upload caps change by provider and plan — verify before you publish. Review cadence: quarterly.
Поддерживаемые форматы
Инструмент оптимизирован для самых популярных форматов изображений.
Сжатие JPG / JPEG
Уменьшайте размер фотографий для быстрой загрузки без потери визуальной четкости.
Shooting on iPhone in HEIC? convert HEIC photos to JPG first
Сжатие PNG
Оптимизируйте скриншоты и графику с прозрачностью для использования на сайтах.
Сжатие WebP
Используйте современный формат для максимальной производительности веб-страниц.
Need classic JPG for an older tool? convert WebP to JPG
How Image Compression Reduces File Size
Image compression removes redundant visual information and can simplify colour or strip bulk you do not need for display. In plain terms: lossy modes discard some detail for smaller files; lossless-style paths keep pixels intact but pack the file more tightly when the format allows.
| Type | What it means | Use when |
|---|---|---|
| Lossy compression | Throws away some visual detail (and often metadata) so the file gets smaller. Quality sliders and Extreme mode lean this way. | Photos, social, email, most web images where a tiny quality trade is fine |
| Lossless compression | Keeps pixel values the same while packing data more efficiently. Colour quantization and metadata stripping can still shrink files without a classic “blurry JPEG” look when used carefully. | UI assets, graphics with sharp edges, when you must preserve exact pixels |
Colour quantization reduces the number of distinct colours; metadata stripping drops camera tags you rarely need online. Some files are already optimized and will not shrink further in a meaningful way — we keep that honest result instead of pretending. Together, those techniques are how an image size reducer turns megabytes into kilobytes without always needing a desktop app.
More on image optimization for web: how to optimize images for the web.
Зачем уменьшать размер изображений?
Оптимизация файлов помогает:
- Соблюдать лимиты на загрузку на различных сайтах
- Ускорять загрузку страниц вашего сайта
- Экономить место на диске или в облачном хранилище
- Легче делиться файлами через email или мессенджеры
Оптимизированные изображения — это залог быстрой работы веба и удобства пользователей.
Безопасность в браузере
Мы используем технологию WebAssembly, чтобы обработка происходила на вашей стороне. Ваша приватность — наш приоритет.
Verify it yourself
- Open DevTools → Network, compress an image, and confirm you do not see the photo file posted to our servers.
- Or turn on airplane mode / disconnect Wi‑Fi and compress anyway — local processing still works.
Read more on why zero-upload compression matters · Security & compliance.
Free and Pro Limits
Free plan: 5 successful uses of this image tool every 24 hours (auto-reset). Pro is $3/month for unlimited compressions and conversions with priority speed. Limits apply per tool, so image compressions do not consume your PDF or video free uses. See pricing.
Written with the AllFileCompressor engineering team — browser-based image compression pipeline (Canvas / Web APIs).