TIFF là định dạng raster chất lượng cao với nén không mất dữ liệu. Lý tưởng cho in ấn chuyên nghiệp và lưu trữ bản đồ. Hỗ trợ độ phân giải cao và màu CMYK.
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Giới thiệu về định dạng TIFF
TIFF is a raster format that has stayed the working standard of print and archives since the 1980s: lossless compression, any image dimensions, support for high resolutions. It is opened by Photoshop, GIMP, Affinity Photo, the standard macOS viewer and just about any image editor.
A map is exported to TIFF when you need a final shot for printing or long-term storage: a poster for the wall, an illustration for a book, an appendix to a report. Unlike JPEG, TIFF loses no pixels when re-saved, so the file calmly survives several rounds of edits.
The output is a single .tiff rendered through QGIS at 300 DPI (the value can be changed at export time). This is an image and nothing more: layers, labels and objects are already flattened and cannot be edited. There is no georeferencing inside — if the map has to go into a GIS on top of other data, take GeoTIFF.
Chương trình nào mở được tệp TIFF
Các chương trình và ứng dụng sau có thể mở, chỉnh sửa và làm việc với tệp TIFF (Tagged Image File Format) (.tiff) được xuất từ OSM2CDR:
Format specifications
- Open standard
- 2D only
- Lossless (no quality loss)
- No attributes
- Output: 1 file
- TIFF 6.0 baseline (no georeferencing). For high-resolution print exports. Opens in Photoshop, GIMP, Lightroom.
Ai sử dụng bản đồ TIFF
Cách xuất TIFF
Cách mở tệp sau khi xuất
- Photoshop and Affinity Photo — File → Open; check the size in pixels and the resolution, and for a print house convert the file to CMYK or simply download a CMYK TIFF from us.
- GIMP — opens TIFF with no plugins; handy for adding a caption, an inset or a frame before printing.
- InDesign, Word, LibreOffice — place it as an illustration; make sure the picture is not stretched beyond 100%, otherwise the effective resolution drops.
- The print house — check their requirements in advance: usually CMYK and 300 DPI at the final size are needed; an RGB file gets converted by the printer itself and the color may drift.
- QGIS — if georeferencing turns out to be needed, a TIFF can be referenced by hand (Raster → Georeferencer), or the map can be re-downloaded as GeoTIFF.
Bản đồ phổ biến ở định dạng TIFF
Nhận bản đồ xuất ở định dạng TIFF (Tagged Image File Format)
Tải bản đồ TIFF chuyên nghiệp từ OpenStreetMap. Tạo tức thì, bất kỳ khu vực nào.
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