Free Image Resizer: resize or crop a batch to one exact size
The Novaverb image resizer changes up to 20 images to one exact pixel size, fits them inside a box, or crops each one by hand. It runs in your browser with no upload.
Kéo bất kỳ đâu trên hình ảnh để vẽ một vùng cắt tự do. Kéo lại để thay thế lựa chọn.
Biến đầu ra thành quy trình làm việc được giám sát
A Novaverb workspace crawls your live site, keeps what it finds, tracks changes over time and turns findings into assigned work.
What is an image resizer?
An image resizer changes the pixel dimensions of a picture. The Novaverb Image Resizer sets a width, a height or both for up to 20 images at once, either cropping every file to the same exact canvas or fitting the whole image inside the box, and it includes a manual crop editor for each thumbnail.
What does the image resizer create?
The image resizer creates a resized copy of every image in the batch, named with its new width and height. Each tile reports the original dimensions, the output dimensions and the output file size. Output is JPG, PNG, WebP or AVIF, limited to the formats the browser proves it can encode.
Who is the image resizer for?
The image resizer is for people who need pictures at a fixed size. A social media manager cuts a batch to a square post format, a store owner makes product thumbnails match, an editor produces a share image at a set width and height, and a developer prepares uniform images for a gallery grid.
Why use an image resizer?
Use an image resizer when a layout or platform expects set dimensions and the source files do not match. Uploading mismatched sizes leaves the destination to stretch or crop them on its own terms. Resizing first lets you decide what is cut from each picture and see the exact output dimensions before anything is published.
How does the image resizer work?
The image resizer works by drawing each decoded image onto a canvas of the target size. Add the images, enter a width, a height or both, pick Same size or Fit inside, optionally open Edit on a thumbnail to draw a crop, then run the batch and download each result or all of them.
Công cụ này chuyển đổi, nén và thay đổi kích thước hình ảnh hoàn toàn trong trình duyệt của bạn bằng cách sử dụng API Canvas - tệp của bạn không bao giờ được tải lên máy chủ. Thả tối đa 20 hình ảnh, chọn định dạng đầu ra, chất lượng hoặc kích thước pixel chính xác, sau đó tải xuống từng kết quả.
Định dạng được hỗ trợ
Đầu vào JPG, PNG, WebP, GIF, BMP, AVIF và ICO phụ thuộc vào khả năng giải mã của trình duyệt. HEIC và TIFF tùy thuộc vào trình duyệt. PNG là phương án dự phòng do tiêu chuẩn quy định; JPG, WebP và AVIF chỉ xuất hiện khi trình duyệt này xác nhận có hỗ trợ mã hóa đúng định dạng đó.
Chuyển đổi, Nén & Thay đổi kích thước
- Chuyển đổi: Thay đổi một hình ảnh từ định dạng này sang định dạng khác.
- Máy nén: Giảm kích thước tệp bằng cách mã hóa lại và tùy chọn giới hạn chiều rộng.
- Công cụ thay đổi kích thước: Thay đổi kích thước một lô đến kích thước chính xác, vừa trong một hộp, hoặc chỉnh sửa một vùng cắt.
What do you enter into the image resizer?
You enter images and a target size into the image resizer. Width and height are entered in pixels, and at least one is required. Quick sizes fill in 1080 by 1080, 1200 by 628 or 1920 by 1080 and select Same size mode. Batches above 20 files, 50 MB per file or 250 MB are refused.
What does the image resizer output contain?
The image resizer output is a tile for each file showing the original width and height, the new width and height and the new file size, with a Download button. The downloaded file name carries the output dimensions. A summary counts the finished files and Download all saves them in sequence.
How do you use the image resizer output?
Use the image resizer output by checking the dimensions on each tile against what the destination asks for. With Same size, every file should show the identical output size. With Fit inside, dimensions can differ because the whole image is kept. Open each downloaded file to confirm nothing important was cropped away.
Where does the image resizer run?
The image resizer runs in the browser, where each image is decoded and redrawn with the Canvas API. No file is uploaded to Novaverb. Formats such as HEIC, TIFF and ICO open only when that browser and operating system can decode them, and a file that cannot be decoded gets an error.
What does the image resizer not tell you?
The image resizer does not tell you whether an enlarged picture still looks sharp. A target larger than the source is honored, so small images are scaled up and can appear soft. Same size crops evenly from the center unless a crop is drawn by hand, and metadata and animation are not carried into the output.
What does an image resizer result prove?
An image resizer result proves the pixel dimensions and byte size of the file the browser produced. With both width and height set in Same size mode, every output has exactly those dimensions without stretching. It does not prove the framing suits the subject, which only a look at the image can confirm.
Which rules does the image resizer apply?
The image resizer applies fixed scaling rules. Same size produces the exact width and height and crops the overflow without distortion. Fit inside scales the image until it fits within both values while keeping its proportions. With only one value entered, the other is calculated from the aspect ratio of the source.
How can you verify an image resizer result yourself?
Verify an image resizer result by opening the downloaded file's properties in the operating system and reading its width and height. Compare them with the values entered and with the dimensions printed in the file name. Then view the image at full size to check the crop and any softness from enlargement.
What does a typical image resizer finding look like?
A typical image resizer case is a batch of landscape product photos needed as squares. With the 1080 by 1080 quick size and Same size mode, every file comes out square and the sides are trimmed evenly. One photo has its subject off center, so Edit is used to draw the crop around it first.
Is the image resizer free?
The image resizer is free, runs without an account and uploads nothing. Selecting files, resizing and downloading all happen in one browser tab. A Novaverb account is needed only for work beyond single files, such as analyzing a whole site from a crawl and monitoring it over time.
What does a Novaverb workspace add to the image resizer?
A Novaverb workspace adds measurement of the pages where resized images end up, which the image resizer never sees. Crawl Explorer inspects every URL captured in the project crawl, records image facts for each page such as image count, missing alt text and the declared share image, and turns each supported technical finding into an action.
When is a free image resizer not enough?
A free image resizer is not enough when the task is to check images across a published site. Confirming that pages declare a share image, or that alt text coverage holds as new pages are added, needs a crawl of the whole site and a recurring check, not a single batch in a browser tab.
What should you do after running the image resizer?
After running the image resizer, download the files and confirm their dimensions. Compress them if the file size is still high, upload them to the destination, and view the published result on a phone and on a desktop screen. Keep the full-size originals, because a reduced copy cannot be enlarged back without losing detail.
Which free tools pair with the image resizer?
The image resizer pairs with the Image Compressor, the Image Converter and the Meta Tag Checker. The Image Compressor reduces the file size of the resized output, the Image Converter changes its format, and the Meta Tag Checker reads a live page's Open Graph social tags, the place where a share image is declared.
What do people ask about the image resizer?
People ask the image resizer FAQ whether images are uploaded to a server, why a selected HEIC, TIFF or ICO file cannot be decoded, and how many images fit in a batch. The answers are that processing stays in the browser, decoding depends on browser support, and a batch holds up to 20 files.
Hình ảnh của tôi đã được tải lên máy chủ chưa?
Không. Xử lý hình ảnh diễn ra trong trình duyệt này và các tệp đã chọn không được tải lên Novaverb.
Tại sao trình duyệt không thể giải mã một tệp đã chọn?
HEIC, TIFF, ICO và một số định dạng mới hơn phụ thuộc vào hỗ trợ giải mã của trình duyệt và hệ điều hành. Các tệp không được hỗ trợ sẽ nhận được lỗi.
Tôi có thể xử lý bao nhiêu hình ảnh cùng một lúc?
Tối đa 20 tệp, 50 MB mỗi tệp và 250 MB mỗi lô.
Dữ liệu của tôi có được tải lên đâu không?
Không. Trình tạo này chạy hoàn toàn ở phía client, ngay trong trình duyệt của bạn. Không có nội dung nào bạn nhập được gửi tới máy chủ, vì vậy có thể dùng an toàn cho nội dung riêng tư.
Nó có thực sự miễn phí không?
Yes, with no account. A Novaverb workspace is only needed when you want your live site crawled, the results kept and changes tracked over time.