15. A computer-implemented system, comprising: one or more computer processors; a tangible memory device storing instructions that are accessible to the one or more processors, the instructions, when executed, causing the one or more processors to perform operations that comprise: receiving, at a computer system, a source version of an electronic document in a source format; processing the electronic document to generate a target version of the electronic document in a target format, the processing comprising compressing one or more images embedded in the electronic document, compressing one or more Type 1 fonts embedded in the source version of the electronic document, and unifying object duplicates embedded in the source version of the electronic document, the target version of the electronic document in the target format including both the compressed one or more images and the compressed one or more Type 1 fonts and excluding one of each of the object duplicates; and outputting the target version of the electronic document in the target format.
15. A computer-implemented system, comprising: one or more computer processors; a tangible memory device storing instructions that are accessible to the one or more processors, the instructions, when executed, causing the one or more processors to perform operations that comprise: receiving, at a computer system, a source version of an electronic document in a source format; processing the electronic document to generate a target version of the electronic document in a target format, the processing comprising compressing one or more images embedded in the electronic document, compressing one or more Type 1 fonts embedded in the source version of the electronic document, and unifying object duplicates embedded in the source version of the electronic document, the target version of the electronic document in the target format including both the compressed one or more images and the compressed one or more Type 1 fonts and excluding one of each of the object duplicates; and outputting the target version of the electronic document in the target format. 16. The computer-implemented system of claim 15 , wherein unifying object duplicates comprises unifying subsets of a same font.