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Convert files online
When you need TIFF from DWG
DWG is the working AutoCAD file: it is used for design, revision, and issuing drawings. When work on the project is complete and the drawing needs to go to a print shop, be deposited in an archive, or loaded into a GIS, DWG gives way to a universal raster format.
TIFF is better suited for this than other rasters: it preserves the image losslessly, is accepted by print shops as the prepress standard, supports the CMYK color model, and allows packing an entire sheet set into one multi-page file. TIFF does not depend on whether the recipient has a CAD program.
What is lost when converting to TIFF
TIFF is a raster snapshot of the drawing view. After conversion you cannot take precise dimensions from it, toggle layers, or continue working in CAD. Scale and editable geometry are lost.
TIFF is therefore suitable for final delivery of a finished drawing, not for a working process. The source DWG must be kept as the master file for edits and re-export. For precise vector exchange with collaborators use DXF or PDF.
The readability of the result depends on the source drawing: the cleaner the original, the better the raster copy.
Print shops and prepress
When a drawing is published in a project catalog, album, monograph, or textbook, the print shop requests a raster file at a fixed resolution. Lossless TIFF with CMYK is the familiar prepress standard. The layout designer places the file without compatibility questions.
For sharp thin lines and readable small text in a printed book, resolution matters: use 300 DPI for most publications, 600 and above for large-format posters or exhibition stands.
Color schemes for engineering utility layers are best delivered in CMYK rather than converted to grayscale: color differences help read the diagram even without labels.
Long-term archiving of project documentation
A project archive lives for decades. A building constructed today will be renovated in 30-50 years - and the original drawings will be needed. Relying only on DWG is risky: the format depends on a specific program, AutoCAD version, and licenses. TIFF is free of these risks: the specification is open, support is built into all operating systems and graphics packages. A TIFF created today will open in 30 years in any viewer without CAD.
For government or museum-level archives choose uncompressed mode or LZW - both preserve every pixel losslessly.
Multi-page TIFF for a drawing album
TIFF supports a multi-page structure: all layout sheets from one DWG are assembled into one file. The architecture, structure, and engineering sections of a project fit into one archive unit. This is more convenient than a folder with dozens of separate files.
GeoTIFF for site plans and GIS diagrams
If the DWG contains geographically referenced data - a site plan in real coordinates, a district utility network diagram, a land parcel plan - conversion to GeoTIFF transfers the coordinate reference into the raster file tags. Any GIS system will open GeoTIFF and overlay it on a satellite base or cadastral plan without manual georeferencing. This is convenient when delivering project materials to urban planning and cadastral systems.
Common tasks
A set of working documentation needs to be deposited in the design institute archive - convert to multi-page TIFF with LZW, one file per section.
A drawing is going to a print shop for a mechanical engineering textbook - 300 DPI, CMYK, LZW.
A site plan is needed in a city cadastral GIS - GeoTIFF with coordinate reference from DWG.
A historical drawing is being handed to a science and technology museum - TIFF without compression, 600 DPI, maximum detail.
Limitations
File size is large. A raster TIFF at high resolution is substantially larger than the vector DWG: an A0 drawing at 600 DPI can be hundreds of megabytes. Match the resolution to the actual task before converting - an archive requires one thing, an email attachment requires another.
Compression affects compatibility. LZW is understood by practically all programs - it is the safe choice. For specialized tasks check the requirements with the print shop or recipient.
TIFF is not suitable for further geometry work. If an expert needs to verify dimensions, use DWG or PDF with preserved text. If collaborators are continuing CAD work, use DXF or DWG.
Related formats
Use DWG to PDF to send a formatted sheet for approval, review, or electronic signature. PDF is more compact, supports text search, and is widely accepted in document workflows.
Use DWG to PNG for previews and illustrations in electronic materials. PNG is lossless and lighter than TIFF for screen display tasks.
Use DWG to SVG for a scalable diagram in a web context.
What is DWG to TIFF conversion used for
Delivering a set to a print shop
Convert DWG sheets to TIFF at 300-600 DPI in CMYK for preparing illustrations for a book, catalog, or project album. Print shops accept TIFF as the prepress standard.
Long-term archive of project documentation
Save completed sets as multi-page TIFF for the design institute archive. One file per section, opens decades later without CAD dependency.
Loading a site plan into a GIS
Convert a geographically referenced site plan or utility network diagram to GeoTIFF. The GIS overlays the raster on the map without manual georeferencing.
Delivering drawings to a museum or scientific archive
Prepare historical or reconstructed drawings for a museum collection in uncompressed TIFF at high resolution - the museum digital preservation standard.
Illustrations for a scientific publication or textbook
Prepare the drawing in TIFF per publisher requirements: 300 DPI, CMYK, LZW. The publisher accepts the file without re-conversion.
Tips for converting DWG to TIFF
Match resolution to the task
For print shop and archive use 300-600 DPI. For large-format printing 600 and above. File size grows with resolution: do not overshoot without need. An A0 drawing at 600 DPI is hundreds of megabytes.
Check print shop requirements in advance
Most print shops expect TIFF at 300 DPI, CMYK, LZW. But requirements vary. Check the color model, ICC profile, and allowed compression type with the printer before sending the file.
Use multi-page mode for sets
If the DWG has multiple sheets, combine them into one multi-page TIFF. This is more convenient for archiving and delivery than a folder with dozens of files.
Keep the source DWG
TIFF is the final print. Edits are made in the DWG, after which TIFF is produced again. You cannot return to editable geometry from a raster using standard tools.